Khenra Spellspear // Gitaxian Spellstalker [March of the Machine]

Trample

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

{3}{U/P}: Transform Khenra Spellspear. Activate only as a sorcery. ({U/P} can be paid with either {U} or 2 life.)

“Bolas’s methods were crude and inefficient, taking generations to refine the population into a reliable source of combat units. Still, it offers us something of a head start.”
—Jin-Gitaxias