Look at the top five cards of your library
Youre limited to gaining control of only Creatures, but in a multiplayer Commander game, youll often be able to take something with a decent attack trigger and get some value, as well as a nice life boost
Getting 2/2s simply for playing Magic is a strong ability on its own, and opens up options for mana ramp, Voltron (making 1 creature super strong through powerups), Curses like Curse of Opulence for table politicking, and several other cool, unique effects that Auras can bring to the table as you build a token army
You can think about it in decks like Teysa Karlov where you sacrifice creatures but also take advantage of tokens, like with the afterlife mechanic
Call for Aid is, without a doubt, the best new card in the deck
Highly recommended for old MTG heads like me