Playing cards like Flickerwisp and Charming Prince help get the job done, and they even give you alternate targets for your Conjurers Closet
That means that if it's on the stack, the only other abilities and spells that can be used are mana abilities
It's mostly defined mechanically by the one set that took place there, which meant going back to themes like instants and sorceries and pushing blue, as the flavor of education is core to the identity of Arcavios
Great for aggro, landfall, tokens, +1/+1 counter decks all of those are mega-popular in multiplayer so grab this last entry and then add it to like half of your Green decks moving forward
Given that he is one of just five Eminence Commanders in Magic and that this ability is among the most powerful the game has ever seen, it becomes pretty obvious why he is so beloved