Allosaurus Rider [Coldsnap] Artifact Creature At least four special alternate-frame

At least four special alternate-frame cards

change all Special Summoned monsters your opponent controls to face-down Defense Position

I don't think you build one on purpose

{T}: Add an amount of {G} equal to Marwyn's power

Set: McDonald's Promos: 2015 Collection Type: Fire Rarity: Promo Retreat cost: Colorless

Allosaurus Rider [Coldsnap] Artifact Creature At least four special alternate-frameSet: Coldsnap Type: Creature Elf Warrior Rarity: Rare Cost: {5}{G}{G} You may exile two green cards from your hand rather than pay this spell's mana cost. Allosaurus Rider's power and toughness are each equal to 1 plus the number of lands you control.