Kryptik wrote:
"When casting a spell that allows multiple creatures touched, the act of casting that spell and applying it to up to 6 allies consumes a standard action, but if you can somehow touch over multiple rounds then the act of touching 6 allies consumes a full round."
this seems most likely to me.
If a multiple-target (let's just say communal) spell is discharged in the same round as cast, you can touch up 6 creatures as a free action. (just like a single-target spell; the reason Communal spells are at a higher level)
If a communal spell is discharged in a later round, you can touch up to 6 creatures as a full-round action. i think this is where "touch over multiple rounds" may be interpreted. since a single-target takes a standard to discharge in a later round (from free to standard), rather than saying it takes 6 standards for a communal spell (for 6 creatures) it instead makes sense to become a full-round (from standard to full).
but then it begs a few more clarifications:
1) because a touch attack can be discharged as a free action in the same round as being cast, can it be used with an AoO? free action to discharge and then your normal melee attack
2) how do deal with "target: one creature/level" spells (i.e. water walk, chill touch)? are these just the exception to the *default* 6 creatures?
3) i can wrap my head around most of this except
"Some touch spells allow you to touch multiple targets as part of the spell. You can't hold the charge of such a spell; you must touch all targets of the spell in the same round that you finish casting the spell."
without this everything else would make sense