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Booming Blade
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Description
Strike with your weapon, afflicting your foe with a resonance that hurts them for 1d8
when they move. This spell can be cast while you are 
.
Requires proficiency with the equipped weapon
Properties
- Cost
Action
- Damage: 1~8
- Details
Melee weapon attack roll
Range: Normal weapon range
Recharge: Per action
Normal weapon damage
+ 1d8 (When the target moves)
(When the target moves)At higher levels
At character level 5, the damage increases to
Normal weapon damage
+ 1d8
+ 2d8 (When the target moves)
(When the target moves)At character level 11, the damage increases to
Normal weapon damage
+ 2d8
+ 3d8 (When the target moves)
(When the target moves)Technical details
UIDTarget_BoomingBlade_ClassSpell
Spell flagsCondition: Booming Blade
Duration: 1 turn
- Affected entity will take 1d8Thunder damage when it moves.
How to learn
Classes:
- Class level 1: Sorcerer, Wizard, and Warlock
- Class level 3: Arcane Trickster, and Eldritch Knight
- Character level 1: High Elf, and High Half-Elf
(Character level is the sum of all class levels for a multi-classed character.)
Granted by features:
Other ways to learn:
Notes
- Since this cantrip uses a weapon attack roll, it qualifies for
. Whenever the caster could make a normal melee attack, this cantrip can be cast instead; although it is limited to one cast per action.
- Receiving Extra Attack via the
passive on a character who has already begun their turn will allow that character to attack once with Booming Blade, and then again by using an Action, circumventing the one cast per action restriction.
- Receiving Extra Attack via the
- Unlike every other cantrip in the game, Booming Blade receives its final upgrade at level 11, not level 10.
- Because its damage includes weapon's damage, this spell allows to trigger effects that care about spell damage type (e.g.
Poisoner's Robe, 
Mourning Frost) with weapon damage. - Booming Blade causes
Diadem of Arcane Synergy to grant 
as it inflicts a condition. - It also triggers the
Ring of Arcane Synergy by virtue of being a damage-dealing cantrip.
Bugs
- Though it is not displayed in its description, Booming Blade can be cast while .
- This cantrip is not correctly classified as a spell so it does not work with the following effects:
- Some other elemental effects are implemented differently and work with the damage Booming Blade receives at level 5. These effects include:
Boots of Elemental Momentum
Gloves of Belligerent Skies
Hat of Storm Scion's Power
Ring of Elemental Infusion
- Due to an additional bug, these items do not work in Honour mode unless the weapon itself deals elemental damage (e.g. from
or any innate elemental damage bonus).
- Due to an additional bug, these items do not work in Honour mode unless the weapon itself deals elemental damage (e.g. from
