Mouseferatu, I´ve created a human shadowcaster 20 and hope to use it at the game table soon

. I use the modifications you proposed, including a liberal use of mystery swaping (and it helped!) and applying CHA to Save DC & Mysteries/day and INT for the highest mystery able to cast, and made Fortitude a low save. I will try to stat the character here next week (I´m having a mild tendinitis case right now) , but there are some points I´d like to discuss and I thank a lot in advance for any answers
1) A shadowcaster with nocturnal caster feat on a plane of eternal night (like the plane of shadow) would always receive the bonus?
2) Shadow Vision Mystery: IMHO, I think the effect was a bit weak if compared to blindness/deafness (2nd lvl spell). Am I missing something?
3) Curtain of Shadows: When you cast this mystery, if there´s a target at one of the squares which the wall will ocupy does he: a) suffers nothing because the mystery fails for the line of effect of the spell is interrupted; b) automatically suffers the effect of the mystery and or c) gets a reflex save to avoid the effects and immediately after must choose to move from either side of the wall?
4) I know I´m nitpicking, but it´s good to point that Life Fades Greater mystery states on its description that you touch a target, but the mystery is summarized as an area effect.
5) The Truth Revealed Mystery states that you unconver information after "minutes of study" but the table refers to rounds of study. Which one of them is right? And regarding the chance of misleading information, how to handle it? Is it assumed you receive a false information if the target successfully saves?
6) Prison of Night/Tomb of Night: When the target is encased at
your turn, he does not gets a fortitude save to escape the mystery right away, right? He will have to wait for his round to make the first save (and receive 1d6 points of cold damage, regardless), yes?
7) Does Unravel Dweomer Mystery has the -4 to caster level checks (because it does not interact easily with spells) when trying to break a flesh to stone spell?
8) It may be a silly question, but I have to ask: when counting the number of metashadow feats as requisite for another metashadow feat OR another use/day for an already existing metashadow feat (like quicken mystery 2/day needing 7 feats), do you count metashadow feats purchased more than once? That is, if you need three metashadow feats in order to pick quicken mystery, is it eligible to have enlarge mystery and 2 x empower mystery?
9) If neither Enlarge Mystery, Reach Mystery and Still Mystery demands a full-round action to cast, they may be applied with Maximize Mystery freely, without any extra time, correct?
10) Is Twin Spell feat acceptable for a metashadow version? What about Mystery Penetration (the shadowcaster´s version for spell penetration)? And what about other metamagic feats, like transdimensional spell or uttercold spell? Personally, I´d have no problem with them (excepting persistent spell and innate spell). Regarding Twin Mystery, It would allow the classic combination of three mysteries/round as it´s done for the standard spellcasters. I´m not worried about the hit point damage pool, but I admit it´s scary a quickened Flesh Fails Greater followed by a twin Flesh Fails Greater at the same round (living creatures would receive without save 18 STR/DEX damage or 12 CON damage without save)