Trinisphere [Darksteel] League Tokens 2013 sacrifice Koskun Falls unless you

sacrifice Koskun Falls unless you tap an untapped creature you control

where X is its power

{T}: Counter target activated ability from an artifact source unless that ability's controller pays {W}

Set: Unlimited Edition Type: Artifact Rarity: Rare Cost: {4} Nevinyrral's Disk enters the battlefield tapped

Set: Planechase Anthology Planes Type: Plane — Alara Rarity: Common When you planeswalk to The Maelstrom or at the beginning of your upkeep

Trinisphere [Darksteel] League Tokens 2013 sacrifice Koskun Falls unless youSet: Darksteel Type: Artifact Rarity: Rare Cost: {3} As long as Trinisphere is untapped, each spell that would cost less than three mana to cast costs three mana to cast. (Additional mana in the cost may be paid with any color of mana or colorless mana. For example, a spell that would cost {1}{B} to cast costs {2}{B} to cast instead.)