Greater Magic Fang and Polymorph spells

[Coinshot]

Say a PC polymorphed into a creature with natural attacks, say, a tiger, and then casts Greater Magic Fang twice to get +2 on his claw and bite attacks, and then he transforms back to his normal human form. If he then transform into a tiger again, would he still benefit from the GMF enhancement (assuming its duration hasn't run out)?

[Blymurkla]

To get a +2 enchantment bonus on three different natural attacks you'd have to be at least level 8 and cast it three times, one for each attack. You can't use the general +1 enchantment bonus to all natural attacks option twice, it won't stack.

I don't have a sure answer for the question you ask. To me, it seems likely that Greater Magic Fang would simply end when you change shape back to human and that it wouldn't resume when you transform into a tiger again.

[Coinshot]

Oh, right, one casting per claw. I can't believe this question hasn't come up before. Surely druids use this spell often instead of relying on the amulet of mighty fists all the time.

[Diego Rossi]

Yes, it stay. The target is "one living creature". You can cast it on a human to enhance one of his claw attack, too. It do nothing unless you have a claw attack, but it is here. As soon as you change into something with a claw attack, it add to that, if you switch to something with only a bite attack it stop working, but it will resume if you get a claw attack.