before bolt diffusing 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.

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

Dispel Magic 3 Enlarge/Reduce 0 Fireball (level 7 version) 7 Flaming Sphere 2 Ice Storm 4 Invisibility 2 Knock 2 Light 0 Lightning Bolt (level 7 version) 7

Hat of Many Spells

Magic Items Dungeon Master’s Guide

its normal casting time, and you can’t use this property again until you finish a Short or Long Rest. On a failed check, you fail to cast the spell and a random effect occurs instead

7, Lightning Bolt; on an 8, Phantasmal Force; on a 9, Polymorph; on a 10, Stinking Cloud. 51–55 You have the Stunned condition until the end of your next turn, believing something awesome

Holy Star of Mystra

Spells Forgotten Realms: Heroes of Faerûn

Bonus Action on later turns, you can unleash a shining bolt from the mote, targeting one creature within 120 feet of yourself. Make a ranged spell attack. On a hit, the target takes Force or Radiant

of level 7 or lower that targeted only you and didn't create an area of effect, you can take a Reaction to deflect that spell back at the spell's caster; the caster makes a saving throw against that spell using that caster's own spell save DC.

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

Xandala

Monsters Tomb of Annihilation

spell attacks). Xandala has the following sorcerer spells prepared: Cantrips (at will): acid splash, fire bolt, light, mage hand, ray of frost 1st level (4 slots): chromatic orb, feather fall, shield 2nd

spell that has a casting time of 1 action, Xandala changes the casting time to 1 bonus action for that casting.Quarterstaff. Melee Weapon Attack: +3;{"diceNotation":"1d20+3","rollType":"to hit

Oshundo the Alhoon

Monsters Phandelver and Below: The Shattered Obelisk

Magic Resistance. Oshundo has advantage on saving throws against spells and other magical effects.Multiattack. Oshundo makes two Chilling Grasp or Arcane Bolt attacks. Chilling Grasp. Melee Spell

Grasp", "rollDamageType":"cold"} cold damage, and Oshundo regains 14 hit points if the target is a creature. Arcane Bolt. Ranged Spell Attack: +8;{"diceNotation":"1d20+8", "rollType":"spell

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

Thri-kreen Mystic

Monsters Spelljammer: Adventures in Space

Multiattack. The thri-kreen makes two Gythka attacks or four Psychic Bolt attacks. Gythka. Melee Weapon Attack: +4;{"diceNotation":"1d20+4","rollType":"to hit","rollAction":"Gythka"} to hit, reach 5

ft., one target. Hit: 10 (2d8 + 1);{"diceNotation":"2d8+1","rollType":"damage","rollAction":"Gythka","rollDamageType":"slashing"} slashing damage. Psychic Bolt. Ranged Spell Attack: +6

Iggwilv the Witch Queen

Monsters The Wild Beyond the Witchlight

an amulet of the planes and a robe of the archmagi.Multiattack. Iggwilv makes two Bewitching Bolt attacks. Bewitching Bolt. Melee or Ranged Spell Attack: +16;{"diceNotation":"1d20+16","rollType":"to

hit","rollAction":"Bewitching Bolt"} to hit, reach 5 ft. or range 120 ft., one target. Hit: 25 (5d6 + 8);{"diceNotation":"5d6+8","rollType":"damage","rollAction":"Bewitching Bolt","rollDamageType

Night Hag (Coven Variant) Legacy

Monsters Monster Manual (2014)

3rd level (3 slots): bestow curse, counterspell, lightning bolt 4th level (3 slots): phantasmal killer, polymorph 5th level (2 slots): contact other plane, scrying 6th level (1 slot): eyebite

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

Green Hag (Coven Variant) Legacy

Monsters Monster Manual (2014)

, counterspell, lightning bolt 4th level (3 slots): phantasmal killer, polymorph 5th level (2 slots): contact other plane, scrying 6th level (1 slot): eyebite For casting these spells, each hag is

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

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

30 feet of it, the Ooze Master can use a reaction to divert the attack if another creature is within the attack's range. The attacker must make a DC 15 Wisdom saving throw. On a failed save, the

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

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

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

feet of itself casting a spell, the giant tries to interrupt it. If the creature is casting a spell using a spell slot of 3rd level or lower, the spell fails and has no effect. If the creature is

Vanifer

Monsters Princes of the Apocalypse

","rollType":"to hit","rollAction":"Spellcasting"} to hit with spell attacks). Vanifer knows the following sorcerer spells: Cantrips (at will): chill touch, fire bolt, friends, mage hand, message

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

Sea Hag (Coven Variant) Legacy

Monsters Monster Manual (2014)

curse, counterspell, lightning bolt 4th level (3 slots): phantasmal killer, polymorph 5th level (2 slots): contact other plane, scrying 6th level (1 slot): eyebite For casting these spells, each hag

Ashen Rider

Monsters Mythic Odysseys of Theros

Assault (Costs 2 Actions). The ashen rider makes an attack using its ashen blade or bolt of ash, and then its mount can use its reaction to make a melee weapon attack. Reduce to Ash (Costs 3 Actions). The

rider makes three attacks with its ashen blade or two attacks with its bolt of ash. Ashen Blade. Melee Weapon Attack: +10;{"diceNotation":"1d20+10","rollType":"to hit","rollAction":"Ashen Blade"} to hit

Graz'zt

Monsters Mordenkainen Presents: Monsters of the Multiverse

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

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

Halaster Blackcloak

Monsters Waterdeep: Dungeon of the Mad Mage

with spell attacks). He can cast disguise self and invisibility at will. He can cast fly and lightning bolt once each without expending a spell slot, but can’t do so again until he finishes a

short or long rest. Halaster has the following wizard spells prepared: Cantrips (at will): dancing lights, fire bolt, light, mage hand, prestidigitation 1st level (4 slots): mage armor, magic missile

Euryale

Monsters The Book of Many Things

turn. Verdant Bolt (Medusa Form Only). Ranged Spell Attack: +11;{"diceNotation":"1d20+11", "rollType":"spell", "rollAction":"Verdant Bolt"} to hit, range 120 ft., one target. Hit: 18 (4d8

);{"diceNotation":"4d8", "rollType":"damage", "rollAction":"Verdant Bolt", "rollDamageType":"acid"} acid damage. Spellcasting (Medusa Form Only). Euryale casts one of the following spells, requiring no material

Hag of the Fetid Gaze

Monsters Candlekeep Mysteries

the wizard’s spell list but must share the spell slots among themselves: 1st level (4 slots): charm person, witch bolt 2nd level (3 slots): alter self, suggestion 3rd level (3 slots): dispel

magic, glyph of warding, slow 4th level (3 slots): blight, polymorph 5th level (2 slots): dominate person, seeming 6th level (1 slot): Otto's irresistible dance For casting these spells, each hag

Mister Witch

Monsters The Wild Beyond the Witchlight

save DC 13, +5;{"diceNotation":"1d20+5","rollType":"spell","rollAction":"Spellcasting"} to hit with spell attacks): At will: fire bolt, invisibility (after casting, roll a d8;{"diceNotation":"1d8

Alhoon

Monsters Mordenkainen Presents: Monsters of the Multiverse

Undead.Multiattack. The alhoon makes two Chilling Grasp or Arcane Bolt attacks. Chilling Grasp. Melee Spell Attack: +8;{"diceNotation":"1d20+8", "rollType":"to hit", "rollAction":"Chilling Grasp"} to hit

Bolt. Ranged Spell Attack: +8;{"diceNotation":"1d20+8", "rollType":"to hit", "rollAction":"Arcane Bolt"} to hit, range 120 ft., one target. Hit: 28 (8d6);{"diceNotation":"8d6", "rollType":"damage

Archon of Falling Stars

Monsters Mythic Odysseys of Theros

). The archon can innately cast the following spells, requiring no material components: At will: command, guiding bolt, spare the dying 1/day each: crusader's mantle, spirit guardians Magic

turn. The archon regains spent legendary actions at the start of its turn. Attack. The archon makes a radiant spear attack or casts guiding bolt. Coordinated Assault (Costs 2 Actions). The archon

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

), invisibility (2 charges), knock (2 charges), lightning bolt (7th-level version, 7 charges), passwall (5 charges), plane shift (7 charges), telekinesis (5 charges), wall of fire (4 charges), or web (2 charges

Khrusor, Spear of Heliod

Magic Items Mythic Odysseys of Theros

additional 30 feet. The light is sunlight. Sun’s Retaliation. When you take damage from a creature within 5 feet of you, you can use your reaction to make a melee attack with the spear against that

. The spear has 10 charges. While holding it, you can use an action to expend 1 or more of its charges to cast one of the following spells (save DC 18) from it: guiding bolt (1 charge), daylight (3

Vecna the Archlich

Monsters Vecna: Eve of Ruin

spells, requiring no material components and using Intelligence as the spellcasting ability (spell save DC 22): At will: Animate Dead (as an action), Detect Magic, Dispel Magic, Fly, Lightning Bolt

reactions per round but only one per turn. Dread Counterspell. Vecna utters a dread word to interrupt a creature he can see that is casting a spell. If the spell is 4th level or lower, it fails and

Drow Matron Mother Legacy

Monsters Mordenkainen’s Tome of Foes

, resistance, sacred flame, thaumaturgy 1st level (4 slots): bane, command, cure wounds, guiding bolt 2nd level (3 slots): hold person, silence, spiritual weapon 3rd level (3 slots): bestow curse, clairvoyance

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

Circle of Power

Compendium - Sources->Dungeons & Dragons->Player's Handbook (2014)

Circle of Power 5th-level abjuration Casting Time: 1 action Range: Self (30-foot radius) Components: V Duration: Concentration, up to 10 minutes Divine energy radiates from you, distorting and

diffusing magical energy within 30 feet of you. Until the spell ends, the sphere moves with you, centered on you. For the duration, each friendly creature in the area (including you) has advantage on saving

4. Reaction Timing

Compendium - Sources->Dungeons & Dragons->Tasha’s Cauldron of Everything

4. Reaction Timing Certain game features let you take a special action, called a reaction, in response to an event. Making opportunity attacks and casting the shield spell are two typical uses of

reactions. If you’re unsure when a reaction occurs in relation to its trigger, here’s the rule: the reaction happens after its trigger, unless the description of the reaction explicitly says otherwise. Once you take a reaction, you can’t take another one until the start of your next turn.

Casting Time

Compendium - Sources->Dungeons & Dragons->Basic Rules (2014)

Casting Time Most spells require a single action to cast, but some spells require a bonus action, a reaction, or much more time to cast. Bonus Action A spell cast with a bonus action is especially

cast as a reaction, the spell description tells you exactly when you can do so. Longer Casting Times Certain spells (including spells cast as rituals) require more time to cast: minutes or even hours

D&D Beyond

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