Traumentia,s Rite

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.) Choose a counter on target permanent or suspended card. Remove that counter from that permanent or card or put another of those counters on it.

Target player mills half their library, rounded down.

Sacrifice a creature: Target player mills cards equal to the sacrificed creature's power.

+1: Target player discards a card. −2: Search your library for a card, then shuffle and put that card on top. −8: Put all creature cards from all graveyards onto the battlefield under your control.