The Sceismic Runner

Begin the game with this card revealed.
All nonbasic lands are Mountains, and when
a land is tapped for mana, the land deals 1
damage to its controller. If its tapped during
another players turn, destroy it.
Each player can only control 4 lands.
Players can sacrifice a land to deal 2 damage
to each creature without flying.
Creatures with flying, gain defender and
Enrage- when this creature its dealt
damage, you lose 3 life.