Experiment Five [Mystery Booster Playtest Cards] Media Promos it's a Spirit in addition

it's a Spirit in addition to its other types

Set: Tenth Edition Type: Creature — Human Cleric Rarity: Uncommon Cost: {W} Whenever another creature enters the battlefield

Whenever a creature attacks

You may spend blue mana as though it were mana of any color to pay the activation costs of Quicksilver Elemental's abilities

Experiment Five [Mystery Booster Playtest Cards] Media Promos it's a Spirit in additionSet: Mystery Booster Playtest Cards Type: Creature Bear Snake Mutant Rarity: Rare Cost: {G} {1}{Z}: Put a +1 +2 counter on Experiment Five. ({Z} is paid with one mana from any source that could produce two or more colors of mana.) TEST CARD Not for constructed play