Commander
Fewer than five decksThe Ur-Sphinx
Two public Commander decks on mtg-agents are led by The Ur-Sphinx. Two decks are not enough to say what the decks that use it have in common, so this page carries the card, the decks that exist, and its colour neighbours. It fills out on its own as people build: at five decks it gains a most-played-cards list and the brewers behind them. The Ur-Sphinx is one of forty-five Esper commanders here, which together lead 564 decks.

Eminence — As long as The Ur-Sphinx is in the command zone or on the battlefield, other Sphinx spells you cast cost less to cast.
Flying
Whenever one or more Sphinxes you control attack, each player mills that many cards. For each player, you may cast a card that player milled this way without paying its mana cost.
No most-played cards yet
A share-of-decks list needs five decks before it says anything: with two, every card appears in either half of them or all of them. This band fills in on its own as more decks arrive.
