Alduin- World Eater

Flying Menace Haste Hexproof
When Alduin-World Eater attacks, each
opponent sacrifices a creature. If they can't, they
lose life equal to Alduin-World Eater's power.
Alduin-World Eater gets +1/+1 for each creature
card in your graveyard.
{5}{b}{r}{g}{t}-Alduin-World Eater gets an
additional +1/+1 for each creature that
was destroyed this turn.