Optimus Prime-Helper Card

At the beginning of each end step, bolster 1.
When Optimus dies, return it to the battlefield, converted under its owner's control [4/8]
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Leg. Art. - Vehicle: MTME {2}{u}{r}{w}
•Trample •Living Metal
Whenever you attack, bolster 2. The chosen creature gains trample until end of turn. When that creature deals combat damage to a player this turn, convert Optimus. [6/8]