<br/>I didn't forget about Kass's Spellcraft (but thanks for reminding me anyway) - rather, Rana's using a particular ability to disguise the verbal/somantic components and the fact that she's spellcasting at all. That's how she was able to furtively cast Dominate Person - if she'd cast it normally we would've been entitled to an initiative check to potentially do something as she was about to cast.<br/><br/>Aria has See Invis and if she could see Rana she would tell Kass (as a free out-of-turn action) - I made a mistake not doing this in my last post, so, since you seemed to indicate you only wanted to do your last action if Kass thought she was, you can change it if you want. (I just edited my last post with Aria saying she couldn't see her.)  Of course it's always possible that Rana is still nearby and mundanely hidden from Aria despite the See Invis (using mundane total cover like a wall, or something like that).<br/><br/>In general, whether you can see the cues to an invisible person is contextual - they're easier to see in water b/c of the displacement (like the sirine in the river), or in certain terrain which leaves more obvious footprints (Aria on the beach). Generally it's still a listen vs move silently and spot vs hide (w/ Invis giving a a Hide bonus of +40 while still or +20 while moving).<br/>In this case our characters see or hear no such cues. It's possible I could forget such things, but usually when I don't mention cues it means there either were none or we failed to spot/hear them.<br/><br/>re: targeted Dispel and invis. You can't target targeted spells against a foe you can't see (so invis, usually, even if a friend you can see invis indicates where they are). There's no miss chance, you just can't do it. You could do an area spell, which centered in the room would indeed hit Kass and Aria. I don't believe you can only target enemies with it.<br/><br/>Also what do you mean by +38.......GDM has a cap of +20 to the caster level, not a bonus of +20.<br/><br/>And smart thinking about arcane casters tending to have bad Fort saves.<br/><br/>120' is a pretty awesome spell range - but remember a a 'burst' spell doesn't go around corners aka affect creatures with total cover (a 'spread' like a Stinking Cloud would) - so if Aria can't see her she's probably out of line of sight and effect.<br/><br/>For example, an enemy you couldn't see b/c of (total) concealment (successfully hiding in bushes, or invis, etc.) would still be hit by such a spell, one with total cover (around a solid wall) would not be.