Casting - gestures?

[FitFitNitMin]

When casting does a wizard need his hands free to gesture or is it purely a verbal action?

Partys elf mage has a broken arm and i agreed that that prob wouldn't impact on casting but when both hands full or arms tied up?

Also can a mage cast spells when "prone"?

[Orin J.]

Rules as written, no movent is required in any sense. Regardless of the requirements in lore, the game mechanics treat casting a spell as having the same requirements as blathering- you only need to be able to open your mouth and let nonsense flow out of it. The prone condition does nothing to restrict one's speech

[yoroba]

Since my players often RP doing gestures whilst casting magic, I think I would house rule a -20 penalty, if their hands were tied, for the bigger spells. Petty spells would be exempt.