Marneus CalgarMarneus Calgar - 9,732 decks, 13,112 as commander The Warhammer 40,000 stalwart is quite a bit more popular as a commander than in the 99, likely because he's just a slam dunk option to lead a tokens deck
The more cards with shift that are released, the better Morph gets
Some cards, like Gale - Wind Spirit, let players return the card to their hand when it is banished, while other cards allow players to draw new cards into their hand
However, for the #2 and perhaps #3 slots we have options, and in my mind Contraband Livestock immediately rises to the forefront
Lets start with Emet-Selch of the Third Seat, a card you can build in various ways