Battle at the Horns

Target opponent sacrifices two creatures or planeswalkers, discards 2 cards, then loses 4 life.
You return a creature or planeswalker card from
your graveyard to your hand, draw 2 cards, then
gain 4 life.
Narset and Sarkhan entered Bolas's Meditation
Realm in hopes of stopping Bolas. Instead of answers,
they found only Tezzeret.