Mardu Triomatron

{g/u}{g/u}{t}: You and another target player may play
an additional land until the beginning of your
next turn.
{w}{u}{b}{r}{g} {t}: Put your commander onto the battlefield from the command zone.
Partner with {w}{b}{r} (This creature may partner
with a commander with {w}{b}{r} color identity that
does not have Partner.)