Persistent Spell + Arcane Surge - do they stack?

[bulbaquil]

Does the Arcane Surge mythic ability stack with the Persistent Spell metamagic? That is, if I expend one use of mythic power to cast, say, persistent lightning bolt on a non-mythic target, how do the saving throws work?

I think it would be something like:

• target rolls two Reflex saves and takes the lowest (as per arcane surge)
  
• if the target still succeeds, it must reroll only once, and suffers the full effects if this reroll fails,

but can also see the case where the Persistent Spell applies to each of the Arcane Surge rolls (roll twice taking the lowest, if that succeeds, roll again twice taking the lowest) or not stacking at all.

What do you think?

[Sarrah]

Yes, because they come from different sources (and there is a limited number of times per day mythic powers can be used). As for the interpretation, I can see two other interpretations. Your interpretation looks fine.