, : Whenever target creature deals combat damage to a non-Wall creature this turn, destroy that non-Wall creature. When the targeted creature leaves the battlefield this turn, sacrifice Acidic Dagger. Activate only before blockers are declared.
Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)At the beginning of your upkeep, put a growth counter on Malignant Growth.At the beginning of each opponent's draw step, that player draws an additional card for each growth counter on...
Mountain Valley enters tapped., Sacrifice Mountain Valley: Search your library for a Mountain or Forest card, put it onto the battlefield, then shuffle.
You may choose not to untap Amber Prison during your untap step., : Tap target artifact, creature, or land. That permanent doesn't untap during its controller's untap step for as long as Amber Prison remains tapped.
Destroy target creature with mana value X. If that creature dies this way, Kaervek's Purge deals damage equal to the creature's power to the creature's controller.
Lands you control are Plains.Nonland permanents you control are white. The same is true for spells you control and nonland cards you own that aren't on the battlefield.You may spend white mana as though it were mana of any color. You may spend other mana only as though it were colorless mana.
Change the text of target permanent by replacing all instances of one color word with another or one basic land type with another. (For example, you may change "nonblack creature" to "nongreen creature" or "forestwalk" to "islandwalk." This effect lasts indefinitely.)
