Corrupted Monk Yao

Menace, Reach. When Yao enters the battlefield, create two 1/1 Corrupted Monk Illusion tokens with Menace, Flying and “When this creature dies, put a -1/-1 counter on target creature.”

Whenever a creature with a -1/-1 counter on it dies, you may return a card from your graveyard to your hand. At the beginning of your upkeep, you may sacrifice one of your creature. If you do, create a 1/1 Corrupted Monk Illusion token.

{u}{u}: Create a Corrupted Monk Illusion token.