+metallic (4)
Gain control of target artifact until end of turn. Untap that artifact. It gains haste until end of turn.
As Metallic Mimic enters the battlefield, choose a creature type.
Metallic Mimic is the chosen type in addition to its other types.
Each other creature you control of the chosen type enters the battlefield with an additional +1/+1 counter on it.
Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for .)
Counter target spell unless its controller pays .
Gatherer works better in the Companion app!