I like this, but I feel like it lacks purpose

It cant attack on its own, and the only reason you'd normally return something to your hand is to make sure it doesnt get targeted (or to enable you're Kefnet the Mindful :P :P :P)

but nobody would likely want to attack this. Maybe the ability could also be more siren-esque? Maybe gain control of target creature with cmc 3 or less ueot?

Also the name could be a bit more unique :)

That's nice. A bit overpriced but nice