Booming Blade
Booming blade is a basic spell of the evocation school often used by shielding swordmages, as well as swordmages of other styles. When a swordmage attacks a creature with their blade, they have the option to add the sonic energy to their attack, using a field of thunderous noise to injure their retreating foe. Like most swordmage spells, the spell is charged primarily by the swordmage's intellect, though their durability adds to the effectiveness of their sonic attack and more experienced swordmages cast booming blade with more power. Booming blade is among the easiest of swordmage spells to learn and can be cast at will.
Effect
You brandish the weapon used in the spell's casting and make a melee attack with it against one creature within 5 feet of you. On a hit, the target suffers the weapon attack's normal effects and then becomes sheathed in booming energy until the start of your next turn. If the target willingly moves 5 feet or more before then, the target takes 1d8 thunder damage, and the spell ends.
TCE, page 106. Also found in SCAG, page 142.
Material Components
Material Component: a weapon
Verbal Component: Imbuo Arma di Tumultum Tonitrua
Related School
Evocation
Related Element
Thunder
Effect Duration
1 round
Effect Casting Time
1 action
Range
Self (5-foot radius)
Level
Cantrip
Applied Restriction
Booming Blade
TCE
p106
Evocation cantrip
Casting Time: 1 action
Range: Self (5-foot radius)
Components: S, M (p)
Duration: 1 round
Classes:
Subclasses: Arcana Cleric, Arcane Trickster Rogue, Eldritch Knight Fighter
Optional/Variant Classes: Sorcerer, Warlock, Wizard
Races: Elf (High), Elf (High; Aereni), Elf (High; Valenar), Half-Elf (Variant; Moon Elf or Sun Elf Descent), Kobold, Merfolk (Ixalan; Blue), Merfolk (Zendikar; Ula Creed)
Feats: Aberrant Dragonmark, Artificer Initiate, Artificer Initiate, Magic Initiate
Other Options/Features: Pact of the Tome
Source:
Damage Type: Thunder