Polis the Planeshifter

When Polis the Planshifter enters the
battlefield, choose a plane at random
from among all planechase planes. Polis has all abilities of the last chosen plane.
(Rolls of the planar die don’t affect Polis.)
{w}{u}{b}{r}{g}: Flip a coin. If you win
the flip do the chaos ensues effect. If you lose
the flip chose a new plane for Polis.