Imperion Magnum

Eminence-Robots you control have Magnetism.

As an additional cost to cast Imperion, sacrifice two Robots.

Vigilance Trample

Target an artifact creature in your graveyard and pay X {e}, where X is equal to that creatures mana value.
Magnetize it under Imperion.

Imperion gets +1/+1 for each artifact magnetized to it.