Originally Posted by
Magicyop
That's the point, is that it gets the ability to use its morphing ability essentially as an immediate-free action, and allows it to change at any time it likes. Normally, you work out damage and DR at the same time, yes, but the idea is that whatever order you do things in in real time, you can interrupt that at any time to morph. So if the combat list goes:
1) Does the creature have DR?
MORPH!
2) Does the attack overcome the DR?
MORPH!
3) How much damage does the attack deal?