Phyrexian Soulgorger [Coldsnap] Kaladesh sacrifice Koskun Falls unless you

sacrifice Koskun Falls unless you tap an untapped creature you control

it becomes an Aura with "enchant creature put onto the battlefield with Necromancy

Set: Prophecy Type: Enchantment Rarity: Common Cost: {2}{U} Whenever an opponent casts a spell

face down cards in your card pool do not count towards progressive difficulty

Set: Mirrodin Type: Legendary Artifact — Equipment Rarity: Rare Cost: {4} Equipped creature gets +5/+5

Phyrexian Soulgorger [Coldsnap] Kaladesh sacrifice Koskun Falls unless youSet: Coldsnap Type: Snow Artifact Creature Phyrexian Construct Rarity: Rare Cost: {3} Cumulative upkeepSacrifice a creature. (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.) The Phyrexian minds that constructed it did not live past its awakening.