RD-45, Unconquered Automaton

Double strike, Trample
When RD-45, Unconquered Automaton enters
the battlefield, destroy target creature or artifact.
{w}{u}{b}{r}{g}: Destroy target artifact you control.
RD-45, Unconquered Automaton gains +X/+X
until end of turn, where X is the casting cost of
the destroyed artifact.