Timely Allies

This spell creates 1d4 undead servants from nearby medium or smaller bodies that will fight for you for a limited time. You close your eyes and focus your energy into the bodies within a 50 foot range centered on yourself. The bodies must have died within the last 24 hours and cannot have any current necrotic energy powering them. Your spell imbues the bodies with a foul mimicry of life, raising it as an undead creature. The bodies retain their previous stats in addition to being undead

on each round while the spell is active you can mentally command the creatures you made with this spell if the creature is within 60 feet of you (if you control multiple creatures, you can command any or all of them at the same time, issuing the same command to each one). You decide what action the creature will take and where it will move during its next turn, or you can issue a general command, such as to guard a particular chamber or corridor. If you issue no commands, the creature only defends itself against hostile creatures. Once given an order, the creature continues to follow it until its task is complete.

Whenever you take damage while you are concentrating this spell, you must make a Constitution saving throw to maintain your Concentration. The DC equals 10 or half the damage you take, whichever number is higher. If you move, speak, or preform any other action the spell immediently stops.

The creatures only last as long as the spell is active, after which it stops the bodies become piles of ashes. 

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you focus energy into an additional 1d4 bodies per spell level