There are too many competitive aggro decks, as well as control decks that have multiple answers to Carnage Tyrant to justify its play
Two mana to flicker a creature or artifact isnt the best rate, but when you can flicker many targets at once, you have a powerful tool at your disposal
Testing Decks : Players can use proxy cards to test new deck ideas or strategies without having to immediately purchase the actual cards, saving both time and money
This deck is very different from the norm
The Muscle Band, in an Inteleon deck, is always of great value added with Aqua Bullet, we will be able to plan multiple knockouts in one turn thanks to Guzma or Escape Rope
I suspect the decline of Rivers Rebuke can be blamed almost entirely on Deflecting Swat, as nobody wants to invest 6 mana only to have their targeted board wipe pointed back at them for free, but I personally dont think this potent spell is all that much worse now than it was years ago