Bahamut, the Godfire

Flying, first strike, vigilance, haste
Hellbreath- Whenever Bahamut attacks, it deals X damage divided as you choose among any number
of targets, where X is equal to the number of mountains you control. If a creature is dealt
damage this way, it loses indestructible until end
of turn. If that creature would die this turn, exile
it instead.
{t}: Prevent X damage, where X is equal to the
number of plains you control.