I had a question on how these feats would work with each other. I'm making a pair of characters for my wife and I to play in PFS together.
She has a swashbuckler kitsune that will have the butterfly strike feat. I'm building a two-handed fighter with a 1-level barbarian dip that will be taking advantage of the crit I'll likely be getting from her character.
My question is this: if my character hits and thus auto-crits, can vital strike be applied to sundering strike? If so (and I see nothing saying it can't), would the vital strike apply to the attack against the foe's HP only, or both the weapon and the foe's HP after the weapon is destroyed because of Greater Sunder?
Similar question: sundering strike states that you can sunder in addition to normal damage. Is normal damage the multiplied damage, or is the sunder in place of the multiplied damage?
Butterfly's Sting: http://www.d20pfsrd.com/feats/general-feats/butterfly-s-sting-critical
Sundering Strike: http://www.d20pfsrd.com/feats/combat-feats/sundering-strike-combat
Greater Sunder: http://www.d20pfsrd.com/feats/combat-feats/greater-sunder-combat---final
Vital Strike: http://www.d20pfsrd.com/feats/combat-feats/vital-strike-combat---final
