Let's assume you have a Multi, OR Dual, Cleric/Ranger. This is one of the most famous, cheesy combinations, because it allows you to learn ALL divine spells, both Druid's and Cleric's, MINUS the evil cleric's exclusive spells (unholy blight, unholy word etc), and the druid's summon of elemental princes and elemental self-transformation. Let's assume you use the Tears of Bhaal to force your Cleric/Ranger change alignment to neutral evil; he does not loose ranger class, because neither a paladin does when he does the same. But if you change alignment and gain a level up shortly thereafter, what will happen to your divine spells? Will the good divine exclusives disappear? Will the evil divine exclusives appear? Will they both be available, or evil spells replace the good spells, or vice versa? What should happen under this specific condition? Anyone knows for certain?

I don't know for certain, but I believe once your alignment changes to Evil, as soon as you level up all the good-specific spells disappear and the evil ones appear.

Easy way to check though is to create such a character and use the console to level him up, then change alignment, and level up again to see what happens.

When a ranger becomes a 'Fallen Ranger', he is no longer a ranger in reality. Your Cleric/Ranger would now be a Fighter/Cleric with the monica of 'Fallen Ranger'. He/she will lose ALL Ranger spells [Edit]... and abilities.

[Edit 2]... you will also lose the Ranger cabin in the Umar Hills, if you have it, and it will be sealed, meaning if you have anything stored in there it will be lost forever.

First of all, it is reported by many players, especially ones with paladins, that having an alignment change through tears of bhaal evi choices, you do NOT loose your alignment-tied class. Or its abilities. About stronghold this is inaccurate, because at that point of the game, you can no longer return to SoA maps. What you say is highly accurate, in other cases of alignment change...

So there is a possible bug in the game, that can be exploited... maybe? Well, if true, it's a bug, not a "feature", it's a mistake. The fact that there have been, and no doubt still are bugs in the code is not news. Errors happen.

But that is the point. No ranger or paladin falls, if he/she suffers an alignment change, through tears of bhaal selfish choices. What you describe is valid, but not the specific case intended to discuss! But, -_- , you did not reload?

There is no room for cheese in my games.

That's playing 'iron-man style'...

Whatever happens as a consequence, let it happen and play it out to the bitter end.

Why aren't veteran players challenging themselves???

You, sir, are the Chuck Norris, son of Bhaal Norris. You challenge the challenge, the challenge cannot challenge you!

Perhaps it's a bug because alignment change isn't generally possible in-game.
'Fallen Ranger' status is tied to reputation, not alignment (AFAIK) so the presto-change-o alignment shift with Bhaal's Tears might not affect it (but maybe a subsequent reputation loss might).

As suggested, best way to answer the question is to use the console to try it out (also then go kill a few innocents to lower your rep afterwards to see if the fallen-ranger stuff still kicks in - it should, but always good to check).

1) In nine hells, by the trials that get you tears of bhaal items, you can have an alignment change to NEUTRAL EVIL, if you acquire even a single tear through evil/selfish action/choice. This is not a bug, and works as intended in game. Also, having an alignment change THIS way, Rangers AND Paladins do NOT loose their class, which is also NOT a but, AND intended.

2) Unfortunately, i have tried the trick i thought of and wondered whether it would work or not. I used the console to teleport there, took a tear the evil way, and tried many different combinations (dual after using it, first dual then use it, etc.). At the end, the results were the same as if i had not changed alignment at all, even if i leveled up after becoming Neutral Evil. Which means, NO evil cleric exclusive spells, can be actually leaned this way. Or the Druid HLAs. The cleric ranger, although neutral evil by game, is still treated as lawful good. He still cannot learn Unholy Blight, Unholy Word, or the Druid HLAs Greater Elemental Summoning and the 2x Elemental Transformations, because this character is NOT a Druid, obviously! Never mind actually, having a hybrid warrior/spellcaster with ALL divine spells minus only 4, is greater still in and by itself.

3) The only real problem is, and i would like if anyone can solve it, that because this character combination gets to learn TOO many spells simultaneously (both cleric's and druid's), and the cleric scroll is not as large as the wizard spellbook, at max level, the 7th page is both filled and overflowed, causing one spell to get off-screen (and thusly unusuable, as if non-existent). This is Symbol Stun, in this case; not a great spell, but why have it gone, especially if it had been present up until earlier? Can i have it displayed again, or is it gone for good?

P.S. Actually, loosing the greater elemental summoning is no big deal. Regular elemental summoning has a chance to summon either one of the princes, or a pair of simple, same element elementals. I am so happy, Ranger/Cleric is so good!