Legendary Creature - Shapeshifter Noble Possibility Technician Whenever this creature or another Kavu you control enters, exile the top card of your library
Sacrifice Gravecrawler to the Altar for one black mana, recast it from the graveyard, and repeat
Battle Ins and Outs When a Battle is put into your hand, it will appear sideways like a split card
While theyre fairly powerful, its their effect on perceived barrier-to-entry that really posed a problem because casual players watching Commander games in passing could reasonably assume that they needed hundreds (now thousands) of dollars in Power-9 mana as table stakes, just to join the format
One that I think is quietly good, if Stalwart Pathlighters condition is met, all your creatures get indestructible, not just the ones with different powers