Urza, the Artificer

{w}{u}{b}: until end of turn, target noncreature
artifact you control becomes an artifact
creature — construct with power and toughness
equal to the number of artifacts you control.
{w}: until end of turn, target construct gains
lifelink.
{u}: until end of turn, target construct gains
flying.
{b}: until end of turn, target construct gains deathtouch.