Bolster Undead Servant

You draw the power from a corpse to bolster the undead creatures in your control for the duration of the spell. Choose up to three undead creatures created by you and under your control within range. Add your proficiency bonus to the creature's AC, attack rolls and damage rolls as well as to any saving throws. They also regain hit points equal to 1d8 + your spellcasting modifier and you roll a d8 in place of the normal damage of their attacks.

At Higher Levels. When you cast this spell using a spell slot of 5th or higher you can target two additional undead creatures for each slot level above 4th.