Gate Guardian

To cast this card exile 3 creatures you control
with total power and toughness of 7+ of
different colors, and 2 cards from the bottom
of your library for every time after the first if
cast from the command zone.
Gates you control have indestructible.
This creature can block an additional time for
each gate you control.
trample, reach, vigilance, ward{7}.
(this is a white blue and green artifact in addition
to its other types)