Balerion, the Black Dread

Flying

Whenever Balerion, the Black Dread attacks, it deals
4 damage to any target and 3 damage to each of up
to two other targets.

"Balerion’s fire burned so hot that Harrenhal’s towers gleamed red against the night, like five huge candles...
and like candles, they began to twist and melt."
— Archmaester Gyldayn, Fire & Blood