Chrome Host Seedshark [Media Promos]

Set: Media Promos Type: Creature — Phyrexian Shark Rarity: Rare Cost: {2}{U} FlyingWhenever you cast a noncreature spell, incubate X, where X is that spell's mana value. (Create an Incubator token with X +1/+1 counters on it and "2: Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.)