Choosing to build around Minn means going mono-blue, but in return, you get a lot of choices about which part of this multi-faceted ability youll try to break
Im also a big fan of this card alongside cards such as Repercussion or Toralf, God of Fury, where it can easily become a secondary win condition in burn decks by sending tons of damage at your opponents if they overextend
And while the majority of ETB promos may not be worth a ton, sometimes these promo cards end up being worth a decent amount, like in the case of the highly popular Snorlax ETB promo we got back in the Pokemon 151 set
This can be an interesting metagame call
It stands to reason then that a commander that can do both, and for a low cost of 3 mana, is likewise going to be quite good in many decks, and his color identity allows him to fit into a variety of strategies