Stomping Ground [GTC - 247]Rarity: R #: 247 Creature Type or Sub Type: Land Mountain Forest Rules Text Contains: (Tap: Add R or G to your mana pool.) As Stomping Ground enters the battlefield, you may pay 2 life. If you don't, Stomping Ground enters the battlefield tapped.

They only specify the consequences should you fail

Rules Text Contains: Whenever you gain life

then shuffle

add R or G

Creature Type or Sub Type: Land — Forest Island

Comet Storm deals X damage to each of them

(If that spell is an artifact

until end of turn

Creature Type or Sub Type: Creature — Bird Wizard

beyond doubt: a change

Flavor: The fear of dragons is as old and powerful as the fear of death itself

Creature Type or Sub Type: Legendary Creature — Human Warrior