Unholy Frenzy

2nd-level Necromancy
Casting Time: 1 action
Range: 30 feet
Components: VSM (the hand of an undead creature)
Duration: (C) 1 minute

The caster grants a willing subject the untiring endurance and energy of the dead. The target moves and acts more quickly than normal. For the duration of the spell, the target of this spell can dash, dodge, or make a single melee weapon attack as a bonus action.

While you gain the endurance of the dead, your body does not. The target of this spell takes 1d6 necrotic damage whenever they take a bonus action granted by this spell, and must make a DC 15 Constitution saving throw when it ends or gain a level of fatigue. Undead creatures have advantage on this saving throw.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, you may target one additional creature for every slot level above 2nd.

Source: Homebrew