Gonti, Lord of the Underworld

Spells you cast that you don't own cost {1} less to
cast.
At the beginning of your upkeep, look at target opponent's hand, then choose a card. That player
may have you exile it. If they do, that player
draws two cards and you may play the exiled card
and spend any color of mana. If that player
doesnt, that player discards a card, loses 1 life, sacrifices a creature, then sacrifices a land.