Biomass Mutation [Gatecrash] Dauthi Knight Mercenary When Gossamer Phantasm becomes the

When Gossamer Phantasm becomes the target of a spell or ability

Set: Magic Origins Type: Creature — Elf Rarity: Uncommon Cost: {3}{G} Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking

Set: Urza's Saga Type: Basic Land — Island Rarity: Common ({T}: Add {U}

Set: Shadowmoor Type: Artifact — Equipment Rarity: Uncommon Cost: {3} Equipped creature has "{3}

Biomass Mutation [Gatecrash] Dauthi Knight Mercenary When Gossamer Phantasm becomes theSet: Gatecrash Type: Instant Rarity: Rare Cost: {X}{G U}{G U} Creatures you control have base power and toughness X X until end of turn. "A regression to ancient forms? A glimpse of future evolutions? Or a fleeting alteration of the present?" Vorel of the Hull Clade