Gaiatron, Titan of the Land's Vengeance

[CNT] If you have 4 or less life left, heal 1 life.

Discount: If you're playing this from your hand, you may [Remove 2 Earth cards in your graveyard from the game.] as many times as you wish. For each time you do, reduce the cost of playing this by 1.

[TD] [OD] "Nature's Wrath": Your opponent chooses 1 of their set cards. Put the rest of their other set cards into the graveyard.

"Seismic Shockwave" - Standard Action: [DR 1: Earth] Deal 1 damage to all enemy units.