Commander
Fewer than five decksTetzin, Gnome Champion
Two public Commander decks on mtg-agents are led by Tetzin, Gnome Champion. 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. Tetzin is one of thirty-nine Jeskai commanders here, which together lead 369 decks.

Whenever Tetzin or another double-faced artifact you control enters, mill three cards. You may put an artifact card from among them into your hand.
Craft with six artifacts (, Exile this artifact, Exile the six from among other permanents you control and/or cards from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)
The Golden-Gear Colossus
Vigilance, trample
Whenever The Golden-Gear Colossus enters or attacks, transform up to one other target double-faced artifact you control. Create two 1/1 colorless Gnome artifact creature tokens.
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.
