Grim Reaper

When Grim Reaper enters the battlefield, each player sacrifices a creature.
Unearth - {1}{b}, Sacrifice a creature.
({1}{b}, Sacrifice a creature: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)
"Death solves many things." - Liliana Vess