minecraft is there a way to make a kill aura hack with commands? 1.15.2 / 1.16
This is actually quite simple, in a repeat command block, put this command:
/execute at YourPlayerName run effect give @e[distance=1..5] instant_damage 1 1 true.
This would also ignore armor, and should make it so that you don't take any damage. It will also target all players (and mobs) around you.
Edit: this command will pretty much instakill ANYTHING near you, so instead, put it in a redstone loop that activates only every so often, OR you can just make it wither, by using wither 1 1 instead of instant_damage 1 1.