Obviously, youll want something that produces tokens, but every decks a token deck these days whether you want it to be or not
This black enchantments abilities feed into one another: Your creatures die and you make Food, and if you sacrifice three permanents, you mill six cards and get to reanimate something
Taking the Merfolk to victory is Hakbal of the Surging Soul, who helps accelerate explore and landfall effects to put you ahead in the game
It'll be fun and ideal for lower powered kitchen tables, but it's hard to see modern Commander having a place for it
The repeatable space it plays into perfectly suits a grindy midrange metagame of a lot of casual games
Theres no wrong way to do it, and either way can be really wild and fun