Vesuvan Doppelganger [Collectors' Edition] Merfolk If you search your library

If you search your library this way

At the beginning of the upkeep of enchanted creature's controller

Exile them at the beginning of the next end step

Set: Invasion Type: Instant Rare Cost: {1}{R}{R} You and target spell's controller bid life

Set: Urza's Destiny Type: Enchantment Rare Cost: {1}{R}{R} Whenever a creature is dealt damage

Vesuvan Doppelganger [Collectors' Edition] Merfolk If you search your librarySet: Collectors' Edition Type: Creature Shapeshifter Rarity: Rare Cost: {3}{U}{U} You may have Vesuvan Doppelganger enter the battlefield as a copy of any creature on the battlefield, except it doesn't copy that creature's color and it has "At the beginning of your upkeep, you may have this creature become a copy of target creature, except it doesn't copy that creature's color and it has this ability."