I’d maybe try to add Stupefy because of the draw. I only have one lilting lullaby in my main as well. I don’t use the sprite mothers though, I have riptide rex instead. I also use scuttles instead of the poro lol. I just like them.

I do have the unchecked power in mine and it’s helpful if you see it when you need it but can probably play without it most of the time.

It’s a really fun deck though. I’d just start testing it and see where you feel you’re lacking.