Doctor Starline

{t}, Exile a Mech you control: You may cast
target Mech from your graveyard this turn.
Warp Topaz - If three or more Mechs were to
leave the battlefield in one turn, you may search
your library for up to three Mech creature cards
and separate them into two piles. Your opponent chooses one of them. Put that pile into your graveyard and the other pile into your hand.