Is the easter helmet actually enchantable? I believe the devs have removed the chance for it to drop but in doing so I think they have removed the enchantment success rate completely. I say this because I've used 116 aqua on it that's 58 tries and it's failed every single one, no drops just fail after fail. There has to be something more than just really really bad luck.
Before any says why are you enchanting it, I think it's awesomely cool and like to wear in my throne room and pretend I'm a bird ka kaw!