Maelstrom Conglomerate

When you control no permanents that are exactly
three colors, sacrifice Maelstrom Conglomerate.
Other creatures you control are artifacts in
addition to their other types and have base power
and toughness 5/3, exalted and devour 1.
Each creature card in your graveyard has unearth
{w}{u}{b}{r}{g}.
Bound to each shard, native to none.