Theres no shortage of good choices for a commander here, but Jinnie Fay, Jetmirs Second is notable for letting you tune your tokens to the current game state
Yes, it lets you search out a basic land every time you attack (which is twice every turn for Karlach), but it also removes lands from your deck, making it more likely to draw cards that will have a greater impact on the game later on
Players need to account for the celebration mechanic when deck-building because if their deck is too slow, they might be run over by someone partying their way to victory
Hei Bai, Forest Guardian | Illustration by Tapioca Ah, shrines
With Neyith on the battlefield, they are immediately refreshed in the hand since you'll draw a card with it
Nearly unmitigated sac engine that creates Treasure tokens