Get this common and shrink that size
Setting aside the utterly random bit of artifact-hosing (which I guess is a reference to Mirrodin Pure defeating the colored Phyrexians), theres an interesting riff on cards like Platinum Angel, Lichs Mirror, Angel of Grace, and Exquisite Archangel
However, in limited formats (Sealed Deck, Booster Draft and Rochester Draft to be specific), commons are a lot more relevant than uncommons, which in turn are more relevant than rares
Maskwood NexusMaskwood Nexus is a very popular card that does take advantage of the changeling ability it grants all your creatures to combo off with The World TreeThe World Tree to put all your creatures into play, which should then lead to any number of game-winning combos: Combos aside, Nexus still helps you get the most out of cards like Voja and Rin and Seri, which both care about two creature types