Zhen, Poison Bird

Flying and deathtouch
At the beginning of your upkeep put a poison
feather token on target creature and also put
two time counters on the creature as well. (When
a creature gets a poison feather token, the creature
gains deathtouch. On it's controller's upkeep reove
a time counter from the creature, if there are no time
conters left on the creature, sacrifice the creature.)