Dylan, The Sleeper Agent

+1: Create a 2/2 black Phyrexian creature tokens with deathtouch and “ When this creature dies, put a poison counter on each player “
-1: Until your next turn “Whenever an opponent casts a spell, gets a poison counter.
-6: You get an emblem with “All creatures get -3/-3 . For each creature that dies this way, it’s controller gets a poison counter.”