Ancient Gear Colossus

Trample, stalwart (This permanent can't be
returned to its owner's hand from the battlefield.)
Improvise
Your opponents can't cast spells during your precombat main phase or during combat on your
turn.
Exile Ancient Gear Colossus and two other
artifact cards from your graveyard: Permanents
your opponents control lose all abilities until end
of turn. Tap them.