Two life is negligible in 20-life formats, and completely forgettable in Commander
I gave the following explanation to my coworkers many times: "FINAL FANTASY II has beavers
When this leaves the battlefield, that card returns to the battlefield.) Creature - Shapeshifter Color tag templates(None) Cybermen Squadron Nonlegendary artifact creatures you control have myriad
Notice I didnt say deck because with the stupid, stupid, stupid, idiotic stupid poison counter theme in Phyrexia: All Will Be One (PAWBO for short), we have another theme that works hand in hand with it, enables other strategies (Planeswalkers) and is heavily in the best color combination (Simic)
You can go very agro, you can go near creatureless, you can have a self mill or discard theme, a reanimate theme, a mana denial theme or a hand attack theme
What makes these so strong is that they are effectively a land