Gorthos, The Fire Crust

Flying, trample
Landfall — Whenever a land enters the battlefield
under your control, if this is your third landfall trigger this turn, deal 3 damage to each non-elemental creature and add {r}{r} to your mana
pool. Otherwise choose one —
• Deal 3 damage to target planeswalker or player.
• Exile the top two cards of your library. You may
play them until end of turn.