Rapid Spell, Channeled Divine Shield

[moritheil]

I was positive someone would have asked this by now, but I can't find any such thread, so here goes: How would you rule Rapid Spell interacts with the Channeled xyz spells from PHB II?

(Rapid spell reduces the casting time from X rounds to 1 round. Channeled spells are spells that can have additional rounds added to the casting time to increase their potency.)

Since we're no longer strictly a letter-of-the-rules forum, please also state your opinions on the balance of this combination, and whether or not it might be a factor in allowing or disallowing the combination.

 

[moritheil]

Hmm, no reply. Is that because someone has in fact asked this before, or because no one knows the answer?

FWIW, from a balance point of view, I don't see Rapid as making these spells broken, because as they are by themselves, they're pretty inefficient without metamagic modifications.

 

[Kmart Kommando]

They would stack, but you would still have to channel the spell for the specified amount of time to get the effect you wanted, so the metamagic would go to waste.