being before detect casting reaction

Counterspell

Spells Player’s Handbook

You attempt to interrupt a creature in the process of casting a spell. The creature makes a Constitution saving throw. On a failed save, the spell dissipates with no effect, and the action, Bonus

Action, or Reaction used to cast it is wasted. If that spell was cast with a spell slot, the slot isn’t expended.

Night Hag

Monsters Monster Manual

Coven Magic. While within 30 feet of at least two hag allies, the hag can cast one of the following spells, requiring no Material components, using the spell’s normal casting time, and using

DC 14): At Will: Detect Magic, Etherealness, Magic Missile (level 4 version) 2/Day Each: Phantasmal Killer, Plane Shift (self only)Cold, FireShape-Shift. The hag shape-shifting;shape-shifts into a

War Caster

Feats Player’s Handbook

leaving your reach, you can take a Reaction to cast a spell at the creature rather than making an Opportunity Attack. The spell must have a casting time of one action and must target only that creature

Staff of the Magi

Magic Items Dungeon Master’s Guide

. Spell Absorption. While holding the staff , you have Advantage on saving throws against spells. In addition, you can take a Reaction when another creature casts a spell that targets only you. If

, using your spell save DC. The table indicates how many charges you must expend to cast the spell. Spell Charge Cost Arcane Lock 0 Conjure Elemental 7 Detect Magic 0

Arch-hag

Monsters Monster Manual

Coven Magic. While within 30 feet of at least two hag allies, the hag can cast one of the following spells, requiring no Material components, using the spell’s normal casting time, and using

spellcasting ability (spell save DC 22): At Will: Detect Thoughts, Dimension Door,Dispel Magic, Hypnotic Pattern 2/Day Each: Mass Suggestion, Modify Memory, Plane Shift Tongue Twister. The

Spellfire Storm

Spells Forgotten Realms: Heroes of Faerûn

. On a failed save, the spell dissipates with no effect, and the action, Bonus Action, or Reaction used to cast it is wasted. If that spell was cast with a spell slot, the slot isn’t expended

. When you cast this spell, you can designate creatures to be unaffected by it. Casting as a Circle Spell. In addition to the spell’s usual components, you must provide a special component (a

Encode Thoughts

Spells Guildmasters’ Guide to Ravnica

memory, idea, or message the thought strand contains. (Casting detect thoughts on the strand has the same effect.)

otherwise stationary. If you cast this spell while concentrating on a spell or an ability that allows you to read or manipulate the thoughts of others (such as detect thoughts or modify

Ooze Master

Monsters Tales from the Yawning Portal

1 round. Instinctive Attack. When the Ooze Master casts a spell with a casting time of 1 action, it can make one pseudopod attack as a bonus action. Spellcasting. The Ooze Master is a 9th-level

spells prepared: Cantrips (at will): acid splash, friends, mage hand, poison spray 1st level (4 slots): charm person, detect magic, magic missile, ray of sickness 2nd level (3 slots): detect thoughts

Pendragon Beestinger

Monsters Acquisitions Incorporated

Echo Spell (1/day). Pendragon can cast the spell he cast on his last turn, whose casting time becomes 1 bonus action. This bonus casting uses a spell slot as normal. Spellcasting. Pendragon is a 4th

following wizard spells prepared: Cantrips (at will): acid splash, light, mage hand, poison spray, shocking grasp 1st level (4 slots): detect magic, mage armor, magic missile, sleep 2nd level (3 slots

War Caster Legacy

Feats Player’s Handbook (2014)

provokes an opportunity attack from you, you can use your reaction to cast a spell at the creature, rather than making an opportunity attack. The spell must have a casting time of 1 action and must target only that creature.

You have practiced casting spells in the midst of combat, learning techniques that grant you the following benefits: You have advantage on Constitution saving throws that you make to maintain your

Cloud Giant Destiny Gambler

Monsters Bigby Presents: Glory of the Giants

Thunderous Clap action and Negate Spell reaction. The mask bearing the cloud rune has AC 15; 45 hit points; and immunity to necrotic, poison, and psychic damage. The mask regains all its hit points at

): At will: detect magic, fog cloud, light, minor illusion 1/day each: dream (as an action), gaseous form, major image Thunderous Clap (Requires Cloud Rune). The giant magically summons a thundercloud

Balance of Harmony

Magic Items Tales from the Yawning Portal

This scale bears celestial symbols on one pan and fiendish symbols on the other. You can use the scale to cast detect evil and good as a ritual. Doing so requires you to place the scale on a solid

(consecrated) or evil (desecrated), and fluctuates slightly if it detects a creature appropriate to the spell but neither good nor evil. By touching the scales after casting the ritual, you instantly learn any information the spell can normally convey, and then the effect ends.

Quandrix Professor of Theory

Monsters Strixhaven: A Curriculum of Chaos

professor until the start of the professor’s next turn. The charmed creature must immediately use its reaction, if available, to move up its speed toward another creature of the professor&rsquo

the professor sees another creature within 60 feet of itself casting a spell, the professor can try to nullify the spell’s formation. The creature must succeed on a DC 15 saving throw using the

Night Hag (Coven Variant) Legacy

Monsters Monster Manual (2014)

). She can innately cast the following spells, requiring no material components: At will: detect magic, magic missile 2/day each: plane shift (self only), ray of enfeeblement, sleep Magic

For casting these spells, each hag is a 12th-level spellcaster that uses Intelligence as her spellcasting ability. The spell save DC is 15, and the spell attack bonus is +7;{"diceNotation":"1d20+7

Graz'zt

Monsters Mordenkainen Presents: Monsters of the Multiverse

spells, requiring no material components and using Charisma as the spellcasting ability (spell save DC 23): At will: charm person, detect magic, dispel magic 3/day each: darkness, dominate person

unoccupied space he can see.Negate Spell (Recharge 5–6);{"diceNotation":"1d6","rollType":"recharge","rollAction":"Negate Spell"}. Graz’zt tries to interrupt a spell he sees a creature casting within 60

Oshundo the Alhoon

Monsters Phandelver and Below: The Shattered Obelisk

. Oshundo casts one of the following spells, requiring no material components and using Intelligence as the spellcasting ability (spell save DC 16): At will: dancing lights, detect magic, detect thoughts

within 60 feet of itself that is casting a spell. If the spell is 3rd level or lower, the spell fails, but any spell slots or charges aren’t wasted.Oshundo lived in Illithinoch at the height of the

Blood Witch

Monsters Guildmasters’ Guide to Ravnica

saving throw or use its reaction to move up to 30 feet in a direction of the witch's choice. Devil's Sight. Magical darkness doesn't impede the witch's darkvision. Innate Spellcasting. The witch's

following spells, requiring no material components: At will: alter self, detect magic, eldritch blast (at 11th level), false life, levitate (self only), mage armor (self only) 1/day each: circle of

Preeta Kreepa

Monsters Waterdeep: Dungeon of the Mad Mage

spell attacks). The mage has the following wizard spells prepared: Cantrips (at will): fire bolt, light, mage hand, prestidigitation 1st level (4 slots): detect magic, mage armor, magic missile

or a reaction, she can shoot one of the following eye rays at one target she can see within 120 feet of her: Fear Ray. The target must succeed on a DC 15 Wisdom saving throw or be frightened for 1

Vanifer

Monsters Princes of the Apocalypse

, produce flame, thaumaturgy 1st level (4 slots): burning hands, chromatic orb, hellish rebuke, shield 2nd level (3 slots): darkness, detect thoughts, misty step, scorching ray 3rd level (3 slots

spell she previously cast using a lair action. Vanifer can take no other lair actions while concentrating on a spell cast as a lair action. Her favorite use of this capability is casting fireball or

Iggwilv the Witch Queen

Monsters The Wild Beyond the Witchlight

): At will: detect magic, disguise self, invisibility, light, mage hand, message, prestidigitation, Tasha's hideous laughter 3/day each: dispel magic, fly, polymorph 1/day each: maze, telekinesis

, teleport, wishNegate Spell (2/Day). When Iggwilv sees a creature within 60 feet of her casting a spell, she tries to interrupt it. If the creature is casting a spell using a spell slot of 8th level or

Witchkite

Monsters Monstrous Compendium Vol. 4: Eldraine Creatures

the following effects of the witchkite’s choice: The target must use its reaction to make a melee attack against another creature of the witchkite’s choice that is within the target

will: detect magic, minor illusion, speak with dead 1/day each: detect thoughts, dimension door, hold monsterThe witchkite can take up to two reactions per round but only one per turn. Enchanting

Oinoloth Legacy

Monsters Mordenkainen’s Tome of Foes

. Innate Spellcasting. The oinoloth's innate spellcasting ability is Charisma (spell save DC 16). It can innately cast the following spells, requiring no material components: At will: darkness, detect

);{"diceNotation":"2d6","rollType":"roll","rollAction":"Corrupted Healing"}. This reduction can be removed only by a wish spell or by casting greater restoration on the target three times within the same

Shemeshka

Monsters Planescape: Adventures in the Multiverse

): At will: alter self, darkness, invisibility (self only), mage hand, prestidigitation 2/day each: detect thoughts, dimension door, suggestion 1/day each: banishment, contact other plane (as an

action), mind blankFell Counterspell (3/Day). Shemeshka utters a magical word to interrupt a creature she can see that is casting a spell. If the spell is 5th level or lower, it fails and has no effect

Oinoloth

Monsters Mordenkainen Presents: Monsters of the Multiverse

its hit point maximum is reduced by 7 (2d6);{"diceNotation":"2d6", "rollType":"roll", "rollAction":"Corrupted Healing"}. This reduction can be removed only by a wish spell or by casting greater

components and using Charisma as the spellcasting ability (spell save DC 16): At will: darkness, detect magic, dispel magic, hold monster, invisibility (self only) 1/day each: feeblemind, globe of

High Fae Mage

Monsters Monstrous Compendium Vol. 4: Eldraine Creatures

material components and using Charisma as the spellcasting ability (spell save DC 19): At will: dancing lights, detect magic, druidcraft, mage armor (self only) 2/day each: faerie fire, gust of wind

, mirror imageFae Counterspell. The high fae interrupts a creature it can see that is casting a spell with verbal, somatic, or material components. The caster takes 10 (3d6);{"diceNotation":"3d6

Hexton Modron

Monsters Planescape: Adventures in the Multiverse

, requiring no material components and using Intelligence as the spellcasting ability (spell save DC 17): At will: detect magic, dispel magic, mending (as an action) 1/day each: plane shift (self

only), protection from evil and goodThe hexton can take up to three reactions per round but only one per turn. Counter Magic. The hexton attempts to interrupt a creature it can see that is casting a

Mordakhesh

Monsters Eberron: Rising from the Last War

). Mordakhesh can innately cast the following spells, requiring no material components: At will: chromatic orb (see “Actions” below), detect thoughts, disguise self 1/day each: banishing smite

up to two allies that he can see within 30 feet of him. If a target can see and hear him, the target can make one weapon attack as a reaction and gains advantage on the attack roll.In the age when

Strongheart

Monsters The Wild Beyond the Witchlight

, Strongheart casts revivify. Spellcasting. Strongheart casts one of the following spells, using Charisma as the spellcasting ability (spell save DC 13): 3/day each: command, detect evil and good

, Strongheart can use his reaction to impose disadvantage on the attack roll, provided he is carrying a shield.Strongheart is a fearless seeker of justice, risking his life to ensure that good triumphs over

Isperia

Monsters Guildmasters’ Guide to Ravnica

, detect evil and good, ensnaring strike, sanctuary, shield of faith 2nd level (3 slots): arcane lock, augury, calm emotions, hold person, silence, zone of truth 3rd level (3 slots): bestow curse

slot): divine word 8th level (1 slot): antimagic fieldMultiattack. Isperia makes two claw attacks. She can cast a spell with a casting time of 1 action in place of one claw attack. Claw. Melee Weapon

Alustriel Silverhand

Monsters Vecna: Eve of Ruin

spells, using Intelligence as the spellcasting ability (spell save DC 22): At will: Dancing Lights, Detect Magic, Mage Armor (self only), Mage Hand 2/day each: Detect Thoughts, Dispel Magic, Tongues 1

/day each: Telepathy, Teleport, Time Stop Shining Counterspell. Alustriel interrupts a creature she can see within 60 feet of herself that is casting a spell. If the spell is 5th level or lower

Zuggtmoy Legacy

Monsters Out of the Abyss

Innate Spellcasting. Zuggtmoy’s spellcasting ability is Charisma (spell save DC 22). She can innately cast the following spells, requiring no material components: At will: detect magic, locate

Thrall. When Zuggtmoy is hit by an attack, one creature within 5 feet of Zuggtmoy that is charmed by her must use its reaction to be hit by the attack instead.Zuggtmoy can take 3 legendary actions

Staff of the Magi Legacy

Magic Items Basic Rules (2014)

holding the staff, you have advantage on saving throws against spells. In addition, you can use your reaction when another creature casts a spell that targets only you. If you do, the staff absorbs the

). You can also use an action to cast one of the following spells from the staff without using any charges: arcane lock, detect magic, enlarge/reduce, light, mage hand, or protection from evil and good

Drow Matron Mother Legacy

Monsters Mordenkainen’s Tome of Foes

DC 20). She can innately cast the following spells, requiring no material components: At will: dancing lights, detect magic 1/day each: clairvoyance, darkness, detect thoughts, dispel magic, faerie

allied demon within 30 feet of the drow uses its reaction to make one attack against a target of the drow's choice that she can see. Cast a Spell (Costs 1–3 Actions). The drow expends a spell slot to

Ulitharid

Monsters Mordenkainen Presents: Monsters of the Multiverse

, the elder brain can form a psychic link with any other creature the ulitharid can detect using its Creature Sense. Any such link ends if the creature falls outside the telepathy ranges of both the

spells, requiring no spell components and using Intelligence as the spellcasting ability (spell save DC 17): At will: detect thoughts, levitate 1/day each: dominate monster, feeblemind, mass suggestion

Fomorian Warlock of the Dark

Monsters Bigby Presents: Glory of the Giants

action and Poisoning Rebuke reaction. The object bearing the blood rune has AC 15; 30 hit points; and immunity to necrotic, poison, and psychic damage. The object regains all its hit points at the end

fomorian casts one of the following spells, using Charisma as the spellcasting ability (spell save DC 16): At will: detect magic, levitate, mage hand, prestidigitation 1/day each: detect thoughts

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