It gets +2/+2 until end of turn
This card only gets better as more otters join in, even if I skip fixing mana for green
If you have a consistent enough plan to get your win the game cards out regularly, you can reduce the number of copies of those cards and run more counter magic to protect yourself and your combo
Alternative Commanders Eris, Roar of the Storm is another sweet high-mana-value commander where you can reduce the generic mana requirement, this one by having different mana values among instant and sorcery cards in your graveyard
It's fun to play and enables many possible strategies: Merfolk, +1/+1 counters, graveyard strategies, or good old-fashioned midrange with creatures that generate value and get more prominent as the game goes on
Honestly, its hard to know where to start when breaking down a deck this big