To be honest, I dont where this theory started, I dont know who came up with it, but its pretty cool nonetheless
Recent sets have seen black and white take up some of reds traditional role as the preeminent aggro colors in Standard, and Im really excited by how a few M21 cards have elevated these strategies
While bouncing three creatures isn't great for five mana, countering a spell isn't great for five mana, and drawing three cards is only okay at five mana, the fact that you can do things like counter a spell and draw two cards, bounce a creature and draw two cards, or bounce two creatures and counter a spell makes it so the sum of Mystic Confluence is much more powerful than its individual parts
Alakazam's attack does 60 damage at base , but it can punish decks like Blastoise for setting up too much, as it can deal 30 more damage for each energy on the opponent's active