before both dies check reaction

Hydra

Monsters Monster Manual

Hold Breath. The hydra can hold its breath for 1 hour. Multiple Heads. The hydra has five heads. Whenever the hydra takes 25 damage or more on a single turn, one of its heads dies. The hydra dies if

damage since its last turn. The hydra regains 20 Hit Points when it grows new heads. Reactive Heads. For each head the hydra has beyond one, it gets an extra Reaction that can be used only for

Marilith

Monsters Monster Manual

Demonic Restoration. If the marilith dies outside the Abyss, its body dissolves into ichor, and it gains a new body instantly, reviving with all its Hit Points somewhere in the Abyss. Magic

Resistance. The marilith has Advantage on saving throws against spells and other magical effects. Reactive. The marilith can take one Reaction on every turn of combat.Multiattack. The marilith makes six Pact

Rope of Entanglement

Magic Items Dungeon Master’s Guide

(Athletics) or Dexterity (Acrobatics) check. On a successful check, the target is no longer Restrained by the rope. If you’re still holding onto the rope when a target escapes from it, you can take

a Reaction to command the rope to coil up in your hand; otherwise, the rope coils up in the target’s space. The rope has AC 20, HP 20, and Immunity to Poison and Psychic damage. It regains 1

Violet Fungus Necrohulk

Monsters Monster Manual

the necrohulk moves, the grafted target moves with it. If the target dies while grafted, its body is destroyed, and the necrohulk regains 10 Hit Points. The grafted target or a creature within 5 feet

of the necrohulk can take an action to make a DC 15 Strength (Athletics) check. On a successful check, the target is no longer grafted and moves to an unoccupied space within 5 feet of the necrohulk.

Ice Devil

Monsters Monster Manual

Diabolical Restoration. If the devil dies outside the Nine Hells, its body disappears in sulfurous smoke, and it gains a new body instantly, reviving with all its Hit Points somewhere in the Nine

"} Cold damage. Until the end of its next turn, the target can’t take a Bonus Action or Reaction, its Speed decreases by 10 feet, and it can move or take one action on its turn, not both. Hit or

Net Legacy

Equipment

has no effect on creatures that are formless, or creatures that are Huge or larger. A creature can use its action to make a DC 10 Strength check, freeing itself or another creature within its reach on a

success. Dealing 5 slashing damage to the net (AC 10) also frees the creature without harming it, ending the effect and destroying the net. When you use an action, bonus action, or reaction to

Yochlol

Monsters Monster Manual

Demonic Restoration. If the yochlol dies outside the Abyss, its body dissolves, and it gains a new body instantly, reviving with all its Hit Points in the Abyss. Magic Resistance. The yochlol has

Advantage on saving throws against spells and other magical effects. Spider Climb. The yochlol can climb difficult surfaces, including along ceilings, without needing to make an ability check. Web

Arch-hag

Monsters Monster Manual

spells and other magical effects. Spiteful Escape. When the hag drops to 0 Hit Points, it dies only if it is within 30 feet of its anathema (a thing the DM chooses as the hag’s most hated thing

(excluding the hag and its allies) within 1 mile of the lair subtract 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Lapsus Linguae"} from any ability check they make when they take the

Magen Handbell

Magic Items Netheril’s Fall

, understands your languages, obeys your commands, and takes its turn immediately after you on your Initiative count. The magen disappears after 1 hour, when it dies, or when you dismiss it as a Bonus

enough for the magen to move to and attack, the magen attacks an object. The magen remains berserk until it disappears, or until a creature holding the handbell takes an Influence action and succeeds on a DC 15 Charisma (Persuasion) check to regain control of the magen.

Grappling Gun

Equipment

a Reaction to shoot the Grappling Gun at an attachable surface to stop your fall. You still must succeed on the check to ensure the Grappling Hook catches on a solid object. On a successful check, you stop your fall.

A Grappling Gun can shoot a Grappling Hook attached to a rope up to 150 feet, and the hook catches with a successful DC 10 Dexterity (Acrobatics) check. Additionally, if you are falling, you can use

Hydra Legacy

Monsters Basic Rules (2014)

, charmed, deafened, frightened, stunned, and knocked unconscious. Whenever the hydra takes 25 or more damage in a single turn, one of its heads dies. If all its heads die, the hydra dies. At the end of

. Reactive Heads. For each head the hydra has beyond one, it gets an extra reaction that can be used only for opportunity attacks. Wakeful. While the hydra sleeps, at least one of its heads is

Leprechaun

Monsters Quests from the Infinite Staircase

magically gifts the target a measure of luck. The creature gains the leprechaun’s Astonishing Luck reaction. The creature can use the reaction three times, after which this gift goes away. The

, Phantasmal Force 1/day each: Fabricate (as an action), MisleadAstonishing Luck. When the leprechaun fails an ability check, an attack roll, or a saving throw, it can roll a new d20 and choose which

Wand of Binding Legacy

Magic Items Basic Rules (2014)

). Assisted Escape. While holding the wand, you can use your reaction to expend 1 charge and gain advantage on a saving throw you make to avoid being paralyzed or restrained, or you can expend 1 charge and gain advantage on any check you make to escape a grappled;grapple.

Giant Slug

Monsters The Tortle Package

needing to make an ability check. Innate Spellcasting. It can innately cast each of the following spells once per day, requiring no components: guiding bolt, sanctuary, and spiritual weapon. Its

(2d4 + 2);{"diceNotation":"2d4+2","rollType":"damage","rollDamageType":"piercing"} piercing damage.Animate Tentacle. When the slug takes damage in this cave, it can use its reaction to animate one of

Sir Braford

Monsters Tales from the Yawning Portal

(included in his attack). Tree Thrall. If the Gulthias Tree dies, Sir Braford dies 24 hours later.Longsword. Melee Weapon Attack: +6;{"diceNotation":"1d20+6","rollType":"to hit","rollAction":"Longsword

him that is within 5 feet of him, he can use a reaction to use his shield to impose disadvantage on the attack roll.While traveling in the vicinity of the Sunless Citadel, Sir Braford and his companions

Djinni Legacy

Monsters Basic Rules (2014)

Elemental Demise. If the djinni dies, its body disintegrates into a warm breeze, leaving behind only equipment the djinni was wearing or carrying. Innate Spellcasting. The djinni’s innate

loses sight of it. A creature can use its action to free a creature restrained by the whirlwind, including itself, by succeeding on a DC 18 Strength check. If the check succeeds, the creature is no longer restrained and moves to the nearest space outside the whirlwind.Lightning, Thunder

Burrowshark

Monsters Princes of the Apocalypse

the bulette while it burrows. The bonded bulette obeys the burrowshark’s commands. If its mount dies, the burrowshark can train a new bulette to serve as its bonded mount, a process requiring a

":"damage","rollAction":"Spear","rollDamageType":"piercing"} piercing damage if used with two hands to make a melee attack.Unyielding. When the burrowshark is subjected to an effect that would move it, knock it prone, or both, it can use its reaction to be neither moved nor knocked prone.

Rakdos Riteknife

Magic Items Guildmasters’ Guide to Ravnica

. Annihilation. If the dagger holds five souls, you can use this property: As a reaction immediately after you hit a creature with the dagger and deal damage to that target, you can release all five souls. If the

target now has fewer than 75 hit points, it must succeed on a DC 15 Constitution saving throw or die. If the target dies, you can’t use this property again until you finish a long rest.

Telepathic Pentacle

Monsters Icewind Dale: Rime of the Frostmaiden

saving throws against being blinded, charmed, deafened, frightened, stunned, and knocked unconscious. Whenever the Telepathic Pentacle takes 25 or more damage in a single turn, one of its heads dies

. If all its heads die, the Telepathic Pentacle dies. At the end of its turn, it grows two heads for each of its heads that died since its last turn, unless it has taken fire damage since its last turn

Deck of Oracles

Magic Items The Book of Many Things

. Roll a d20 and record the number rolled. Once in the next 8 hours, immediately after a creature within 60 feet of you makes an ability check, an attack roll, or a saving throw, you can use your

reaction to discard the d20 roll; the creature must use the number you rolled in place of its roll. Additionally, while holding the cards, you can cast Divination from them. Once this property is used, it can’t be used again until the next dawn.

Chronolometer

Magic Items Acquisitions Incorporated

reroll the check and take either result. Once you use this feature of the chronolometer, it cannot be used again until the next dawn. Fate Swap. As a reaction when a creature you can see within 30 feet

doubling your speed until the end of the turn. On a 4–6, you go forward in time to warn yourself of what is to come. The next time you fail a saving throw, attack roll, or ability check, you can

Marilith (Summoner Variant) Legacy

Monsters Monster Manual (2014)

reaction on every turn in a combat.Multiattack. The marilith makes seven attacks: six with its longswords and one with its tail. Longsword. Melee Weapon Attack: +9;{"diceNotation":"1d20+9","rollType

60 feet of its summoner, acts as an ally of its summoner, and can’t summon other demons. It remains for 1 minute, until it or its summoner dies, or until its summoner dismisses it as an

Dao Legacy

Monsters Monster Manual (2014)

Earth Glide. The dao can burrow through nonmagical, unworked earth and stone. While doing so, the dao doesn’t disturb the material it moves through. Elemental Demise. If the dao dies, its body

target. Hit: 20 (4d6 + 6);{"diceNotation":"4d6+6","rollType":"damage","rollAction":"Maul","rollDamageType":"bludgeoning"} bludgeoning damage. If the target is a Huge or smaller creature, it must succeed on a DC 18 Strength check or be knocked prone.

Graz'zt

Monsters Mordenkainen Presents: Monsters of the Multiverse

feet of him. If the spell is 3rd level or lower, the spell fails and has no effect. If the spell is 4th level or higher, Graz’zt makes a Charisma check against a DC of 10 + the spell’s

one Wave of Sorrow attack. Dance, My Puppet! One creature charmed by Graz’zt that Graz’zt can see must use its reaction to move up to its speed as Graz’zt directs.The appearance of

Green Hag (Coven Variant) Legacy

Monsters Monster Manual (2014)

with a successful DC 14 Wisdom (Insight) check. Shared Spellcasting. While all three members of a hag coven are within 30 feet of one another, they can each cast the following spells from the wizard

like another creature of her general size and humanoid shape. The illusion ends if the hag takes a bonus action to end it or if she dies. The changes wrought by this effect fail to hold up to physical

Yochlol (Summoner Variant) Legacy

Monsters Monster Manual (2014)

it is wearing or carrying isn’t transformed. It reverts to its true form if it dies. Magic Resistance. The yochlol has advantage on saving throws against spells and other magical effects

. Spider Climb. The yochlol can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check. Innate Spellcasting. The yochlol’s spellcasting ability is

Assassin Vine

Monsters Tomb of Annihilation

restrained by entangling vines and roots. A creature restrained by the plants can use its action to make a DC 13 Strength (Athletics) check, freeing itself on a successful check. The effect ends after 1 minute or when the assassin vine dies or uses Entangling Vines again.Cold, Fire

Green Hag Legacy

Monsters Basic Rules (2014)

magical illusion that makes her look like another creature of her general size and humanoid shape. The illusion ends if the hag takes a bonus action to end it or if she dies. The changes wrought by

to visually inspect the illusion and succeed on a DC 20 Intelligence (Investigation) check to discern that the hag is disguised. Invisible Passage. The hag magically turns invisible until she

Ironscale Hydra

Monsters Mythic Odysseys of Theros

against being blinded, charmed, deafened, frightened, stunned, or knocked unconscious. Whenever the hydra takes 35 or more damage in a single turn, one of its heads dies. If all its heads die, the

hydra dies. At the end of its turn, it grows two heads for each of its heads that died since its last turn, unless it has taken fire damage since its last turn. The hydra regains 10 hit points for

Yochlol Legacy

Monsters Monster Manual (2014)

it is wearing or carrying isn’t transformed. It reverts to its true form if it dies. Magic Resistance. The yochlol has advantage on saving throws against spells and other magical effects

. Spider Climb. The yochlol can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check. Innate Spellcasting. The yochlol’s spellcasting ability is

Caradoc

Monsters Dragonlance: Shadow of the Dragon Queen

. Rejuvenation. If Caradoc dies, he reforms within Dargaard Keep in 2d6;{"diceNotation":"2d6", "rollType":"roll", "rollAction":"Days"} days. Unusual Nature. Caradoc doesn’t require air, food, drink

himself. The target must succeed on a DC 15 Wisdom saving throw, or the target must immediately use its reaction to make a melee attack against another creature of Caradoc’s choice (wasting its reaction if there are no other creatures within reach).

Treant Sapling

Monsters The Wild Beyond the Witchlight

succeed on a DC 18 Intelligence (Investigation) check to discern that the treant is animate.Multiattack. The treant makes two Slam attacks. Slam. Melee Weapon Attack: +5;{"diceNotation":"1d20+5

dies, until the treant dies or is more than 120 feet from the tree, or until the treant takes a bonus action to turn it back into an inanimate tree. The tree then takes root if possible.Bludgeoning, PiercingFire

Polukranos

Monsters Mythic Odysseys of Theros

. Whenever Polukranos takes 40 or more damage in a single turn, one of its heads dies. If all its heads die, Polukranos dies. At the end of its turn, it grows two heads for each of its heads that died

beyond one, it gets an extra reaction that can be used only to make opportunity attacks. Siege Monster. Polukranos deals double damage to objects and structures. Wakeful. While Polukranos sleeps, at

Wheel of Stars

Magic Items Acquisitions Incorporated

While attuned to this device, you have a +1 bonus to Wisdom saving throws, and you can use an action to cast the dancing lights, guidance, or message cantrips. Portent of the Stars. As a reaction

when a creature you can see within 60 feet of you makes an attack roll, saving throw, or ability check, you make that creature roll a d10 and add or subtract the number rolled (your choice) from the

Occultant Abacus

Magic Items Acquisitions Incorporated

disadvantage. When such a roll is made, you can use a reaction to grant a d10 to a different creature you can see. That creature can add the d10 to any ability check, attack roll, or saving throw it

someone in your franchise within the last 24 hours, then grant the character who slew it a d10. Once within the next hour, that character can add the d10 to an attack roll, ability check, or saving

D&D Beyond

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