Satoru Gojo, The Strongest

This card costs {1} less for each Sorcerer card in your graveyard

Everytime a Sorcerer, Shikigami or Curse dies, draw a card

{t}: When a creature dies, you may tap this card, play a spell from your graveyard equal to or less than its base cost

Creatures you control have "Sacrifice this card, mill cards equal to its base toughness"