Flamewake Dragon

Flying, Sunder (As an additional cost to cast
this spell, you may sacrifice any number
of lands to pay {2} for each land sacrificed this
way.)
When Flamewake Dragon deals combat
damage to a player, exile the top card of
your library. If it's a land card, add {r}{r} to
your mana pool at the beginning of your
next main phase. If it's a nonland card deal
2 damage to target player.