Makes it a good attacker, guarder and can be used as removal.

Maybe should cost more and cantrip.

This feels like a blue-red card to me. Transforming is blue. Flying is blue. Defensive buffs are... green but blue to a lesser extent.

But can't block is a horribly red ability. The only colour outside of red that touches it is black.

I'm also not sold on the name. It's a minor thing but you're sort of poking fun at a card. It's like we're referencing a card and it feels like a joke card with that name.

Maybe just remove the "Can't block" clause and I could see this as decent. It's low powered but it's a common it's supposed to be.

Can't block is very close to being blue. Blue is the colour of tapping which is basically can't block. Also see cards like stratus walk.

Maybe make it "can only block fliers".

Change the name if you want, I don't care.

Nerfed the card while changing it. Now I feel it needs something else but i suppose it's serviceable as is.