Chrome Host Seedshark
From March of the Machine set
Chrome Host Seedshark
Creature — Phyrexian Shark
2/4
Flying
Whenever 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 "
: Transform this token." It transforms into a 0/0 Phyrexian artifact creature.)