im at amdusious....i get the dragon scale and run to the altar after that im confused, and was wondering if i can damage him while he is dragon form
Yes, somethimes I had the possibility to attack Amdusias when he's still in dragonform

...
But most of the time he don't see you when he's a dragon ... but when he see you, he also attack you and do damage!
But I don't know if Amdusias can heal himself?