Affinity and such on down
Blue-Red Delver quickly became the tier zero deck in Modern thanks to the card advantage that Treasure Cruise offered, and within a few months, the spell had to be banned in Modern and in Legacy and eventually restricted in Vintage as well
You can control both players, if you want
Each and every new Faerie card is strong in its own right
With Tovolar leading the pack, Werewolves went from neglected beta to dominant alpha at the tables, proving once again that any archetype can gain a huge power boost if you put an undercosted massive card draw engine in the command zone
I'm not sure I'd play this in normal spellslinger, but if the spells you're slinging often can buff the power of this as well, it's not a bad way to get a few tokens rolling