Wildshape, hd forms

[Laharl]

Hello,

One question about those weird wildshape. if I get a form of a monster who has 8HD at level 8. Would i be able to wildshape into this monster at lvl 12 but with 12HD?

Thx in advance,

Laharl

 

[shilsen]

Nope.

But since your hit pts aren't dependent on the form, HD don't matter.

 

[Iku Rex]

What the FAQ has to say:

Can you become advanced versions of creatures with
polymorph* (Player’s Handbook, page 263), or just the most
basic as presented in the Monster Manual?
The rules don’t explicitly prevent this, but for speed of play
(and reasons of sanity) it’s entirely reasonable for a DM to
disallow any forms other than those detailed in the Monster
Manual (or other allowed volumes of monsters). If the DM
chooses to allow advanced creatures, the player must supply
full statistics for the advanced version before play begins.
Remember that the Hit Die limit for the various polymorph
spells still applies (a 7th-level wizard can’t use polymorph to
assume the form of a 10-HD advanced sahuagin).
*The question and answer uses “polymorph” to refer
specifically to spells that rely on the polymorph or alter self
spell to adjudicate their effect (including alter self, polymorph,
polymorph any object, and shapechange), psionic powers based
on the metamorphosis power (including metamorphosis and
greater metamorphosis), and any other effect based on either of
these lists.

The answer involves polymorph, not wild shape/alternate form[/I, but I don't remember any differences in this regard. (?)

 

[TheGogmagog]

Nope.
But since your hit pts aren't dependent on the form, HD don't matter.

HD does matter as the advanced monsters have larger sizes, and the stat increases. Two cases where the difference is significant is wolves and wyverns.

 

[Rath the Brown]

Depends on your DM; if he/she allows any shapechanging ability (Polymorph, Wild Shape, Alternate Form, ect) to change into an advanced creature, then yes.

If not (which I suspect most do not), then nope. You're stuck with a normal version of that creature, no matter what level/HD you have.