Swampwalk At the beginning of your upkeep, return target creature card from your graveyard to the battlefield. At the beginning of each opponent's upkeep, that player sacrifices a creature of their choice.
Trample Whenever you tap a land for mana, add one mana of any type that land produced. Whenever an opponent taps a land for mana, that land doesn't untap during its controller's next untap step.