War Drums
3rd-level Enchantment
Casting Time: 1 action
Range: Self
Components: VS
Duration: (C) 10 minutes
The invigorating sound of war drums echoes outwards from you, spurring them to make short work of your opponents. Melee weapon attacks made by you and all allies within 30 feet that can hear you deal an additional 1d6 damage, and are magical for the purpose of bypassing damage resistance.
At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d6 for each two slot levels above 3rd.
Source: Homebrew