Commander
Fewer than five decksBlack Cat, Cunning Thief
One public Commander deck on mtg-agents is led by Black Cat, Cunning Thief. One deck is not enough to say what the decks that use it have in common, so this page carries the card, the deck 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. Black Cat is one of 145 Mono-Black commanders here, which together lead 499 decks.

When Black Cat enters, look at the top nine cards of target opponent's library, exile two of them face down, then put the rest on the bottom of their library in a random order. You may play the exiled cards for as long as they remain exiled. Mana of any type can be spent to cast spells this way.
No most-played cards yet
A share-of-decks list needs five decks before it says anything: with one, every card it plays is in the only deck there is. This band fills in on its own as more decks arrive.
