While it has fallen from grace quite a bit in recent years, being able to search for any land every turn cycle is both incredibly powerful and easy if you arent the player who went first in your pod of players, as youll, in theory, always be behind in land if the first player never misses a land drop
I'd previously designed a few Commander decks under Ethan's lead and was able to take that knowledge and really run with it here
With something like Muldrotha, the Gravetide to recur this merfolk, it becomes quite annoying
Birds of Paradise is perhaps the best one, but there are multiple iterations of the one-drop creature that taps for one mana
2 Vilis, Broker Of Blood Vilis, Broker Of Blood is one of the best Mono-Black cards in Commander
Kitsa, Otterball Elite I can imagine other cards that look better in a prowess deck, but Kitsa, Otterball Elite is sneaky awesome