The fact that there are clear and evident combinations that produce the best synergies means that players are discouraged from experimentation and that certain commanders will see less play
The thought here is that if you can use lots of Treasures for the activated ability, you have a chance to make a ton of creature tokens
However, in some unusual cases, that Treasure token might enter as a creature, in which case it might impact whether you get Fish or not
Tiger-Tribe Hunter After a number of old cards, which are notably weaker because power creep is a thing, its strange to see a card as modern as Tiger-Tribe Hunter not rank higher
If were going big, remember that Eldrazi Conscription is a tribal enchantment
If you want to play more of a controlling deck, Talrand, Sky Summoner is the right Merfolk for the job