Herald of Ruin

Haste
When Herald of Ruin enters the battlefield, each opponent sacrifices a nonland permanent.
Whenever Herald of Ruin attacks, exile a creature
card from target graveyard.
When Herald of Ruin dies, you may cast all cards exiled with it without paying their mana costs.
"It took twenty men four hours to bring it down. When
the beast finally fell, they found their troubles had only
just begun."