Stomping Wildwood
Enchantment Land (Rare)

(Stomping Wildwood isn't a spell.)

At the beginning of your end step, if you didn't cast any spells this turn, Stomping Wildwood deals 1 damage to you.

All creatures have Swampwalk.

Tap: Add R to your mana pool. If you played a land this turn, Add G to your mana pool instead.

Justin Deschamps