The Thousand Year Blood War

As The Thousand Year Blood War enters, choose Shinigami or Quincy. If there are four or more card types in graveyards, you gain both.

•Shinigami: On your upkeep, you may return a
card you own with mana value 5 or less to the battlefield under your control.

•Quincy: Whenever a creature dies, put a +1/+1 counter on up to 3 creatures.