Its already a Commander favorite, with the standard version around $7 and the Secret Lair version around $30
Lots of the Lorcana starter set cards do similar things, and thats before we even address the fact that a few of the cards in the starter deck are Song cards
Backdraft Hellkite does more, but is harder to pull off
As for the commanders, heres a few not mentioned yet
+4x Jafar - Royal Vizier -2x Beast - Forbidding Recluse, -1x Merlin - Shapeshifter +3x Jafar - Dreadnought Early Game Amethyst decks with the bounce package generally want to be aggressive or controlling, but control decks are usually filled with expensive legendaries
Whenever Thada Adel deals combat damage to a player, search that player's library for an artifact card and exile it