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 creted by you in your control within range.  Add your proficency bonus to the creatures AC, attack rolls and damage rolls as well as to any saving throws.  They also regain hitpoints 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 level or higher you can target two additional undead creatures for each slot above 4th.