Balerion, the Black Dread

Flying, Trample, Menace
Whenever Balerion, the Black Dread deals combat
damage to a player, it deals 2 damage to each
creature that player controls. Then destroy target artifact.
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"On wings as black as pitch Balerion plunged
through the night, and when the great towers of
Harrenhal appeared beneath him, the dragon roared
with fury and bathed them in black fire, shot
through swirls of red."