Matthew Downie |
When you cast a polymorph spell that changes you into a creature of the animal, dragon, elemental, magical beast, plant, or vermin type, all of your gear melds into your body... If your new form does not cause your equipment to meld into your form, the equipment resizes to match your new size.
A Xiao is a magical beast so in this case the equipment would meld rather than resize.
Matthew Downie |
If you got hold of a Huge rapier and cast Shrink Item on it, it would turn into a tiny rapier for several days. Unfortunately there are no rules for buying Huge weapons either.
If you bought a Large rapier (which there are rules for) and cast Shrink Item on it, it would turn into a Diminutive Rapier. So if you ever need one of those...
Matthew Downie |
You can't just take one hand off the weapon as a free action and then cast your spell? I guess if you're wanting to take advantage of the Spell Critical ability that might not be allowed.
A rapier is about forty inches, so a tiny one would be ten inches. Might work as a hatpin, but I think you'd have to throw it to the ground before transforming to avoid it melding into your body.
Lorewalker |
Resize Item is a spell that lasts 24 hours and will adjust a weapon or armor up to 2 sizes up or down.
The Resizing weapon enchant always adjusts the weapon to your current size. It only costs gold without adding to the current enhancement.
The Iron Lord's Transforming Slivers will also permanently adjust a metal weapon 1 size category per 1000gp application. You will need to be your intended size when applying the slivers.