When adding a spell to your spell list, you treat it for all intents and purposes as if it were spells from your class list; in other words, as far as that Warmage is concerned, all those spells are on the Warmage spell list. Full stop.
And another Wizard could learn miracle from a scroll that you scribed with Miracle on it; it is a Wizard spell at that point, after all.
Sorry, but no. It's still a Luck spell, even if it is on YOUR list, it is not on THE list, which is what SCM cares about.
Also, you don't apply Sanctum Spell to a spell, so Arcane Thesis doesn't apply.
You do apply it, actually. Sanctum Spell is a metamagic feat like any other, using the same wording as any other metamagic feat.
Oh, whoops. Misread the feat. Sorry 'bout that.
Nope. Arcane Disciple does not do that. It adds it to YOUR class list, not THE class list, unless you are going to assert that you having a buddy playing Warmage 1/Rainbow Servant 10/PrC bard 1/PrC Paladin 1/PrC Ranger 1/Sandshaper 1/Divine Oracle 1/Church Inquisitor 1/someotherexpandedlistclasses X would give ALL warmages access to those spells, and that any wizard can now scribe Miracle because someone took that feat. Nope, sorry, but it doesn't work.
Amechra answered this one above, but I'll quote here from the Shadowcraft Mage handbook:
Arcane Disciple (luck): All right. You’ve managed to get your character to mimic ninth level spells, but you’re still chafing at something. You can only mimic all the spells from one and a half schools. How unfair is that? Miracle is an evocation spell. If only it were on the Sorcerer/Wizard spell list, then we could mimic it and thereby mimic any spell of seventh level or lower. Well, it’s time to shatter the game and stomp on its remains, cackling in a little, gnomish soprano.
(i) A spell is a sorcerer or wizard spell if and only if it is on the Sorcerer/Wizard spell list.
(ii) Arcane Disciple adds the spells on the selected domain list to "your class spell list."
(iii) For a Sorcerer or Wizard character, "your class spell list" refers to the Sorcerer/Wizard spell list.
(iv) By (ii) and (iii), Arcane Disciple (luck) adds, for you, miracle to the Sorcerer/Wizard list (for a Wizard or Sorcerer).
(v) By (i) and (iv) miracle becomes a sorcerer or wizard spell, for you.
Hopefully that helps. You may disagree with it, which is your prerogative, but this is the You Break It You Buy It board, and since the RAW supports this interpretation as much as it does yours, i'm allowed to use it here.
No, it doesn't. It still is not a wizard spell. Reread Arcane Disciple. It says it adds it to your list, not the list. I'm sorry, but it's still a Luck domain spell. Just copying someone else's arguments doesn't help if their arguments are still wrong. The Rainbow Servant PrC does not allow Wizards to scribe any cleric spell they want, or the Warmage to spontaneously cast all cleric spells without taking the PRC. This is the YBIYBI, but that still does not allow the rules to be broken. It's not questionable, it's more along the lines of trying to use a Ring of Evasion to qualify. It looks nice, but it doesn't actually give you what you think it does.
Also, you don't apply Sanctum Spell to a spell, so Arcane Thesis doesn't apply.
I'm not sure where you're getting this from -- it's patently wrong. Sanctum Spell is a metamagic feat, which you can apply to any spell you prepare, or none. The first sentence in the feat says "A sanctum spell has an effective blah blah blah" just like Quicken references "a quickened spell" and Empower references "an empowered spell".
Sorry 'bout that. Accidentally looked at the Tome and Blood version, where the formatting was kinda weird.
By the way, rather than derailing the thread with arguments about Shadow Miracle, we can just avoid the whole thing by switching to an Archivist. Now we don't need ScM at all.
That solves the problem, but raises others. Manyjaws isn't on any divine lists that I can see, though I am AFB, so this is based on memory and Google-Fu, so you can't know it, therefore you can't cast it with Arcane Fusion. Also, as an Archivist, you have a prayerbook, not a spellbook, so Elven Spell Lore doesn't work. Also, you run out of spell slots, unless you're a necropolitan tainted scholar, a Festering Anger Illumian, or something similar, given that your miracles are 9th level, and so don't work with Lucubration.
Overall, it would simply be easier to be a level 5-ish Elf generalist domain wizard, and use all the price-reduction tricks in the book to wish for a one-use item of wish, and then to use that to wish for a use-activated ring of wishes. That can do the same thing without worrying about spell slots or the like. Or, just use a bunch of CL-boosters to shapechange into a Zodar at level really low. Much easier.