The Pun Pun discussion began in this thread:
http://www.tgdmb.com/viewtopic.php?t=54081
...which I would merge to if I still had the power. It's the one thing I miss about BBboy.
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For reference, the Manipulate Form ability from the Sarrukh entry in Serpent Kingdoms:
The only real "limit" is that you can't increase a target's ability score higher than your own. Even that is gotten around fairly easily with shit like "Shapechange"
Also, there is no errata concerning Sarrukhs. Because WotC uses errata for "oh, we left a comma out," and "this class is not shitty enough" not "oh shit, we wrote something broken."
Divine Rank cannot be granted (duh), because it's not marked out as any sort of ability. Divine Aura and Remote Sensing can be granted, as they are extraordinary and supernatural abilities, respectively. However, both would be useless to grant, because they don't do anything unless you have divine rank.
There is a technical loophole you can use to grant Divine Rank, which is the (extraordinary) Immortality quality of the Dragon Ascendant PrC in Draconomicon. I recalled it actually granting DivR, but all it really says is "the dragon ascendant is actually now a quasi-diety." Quasi-diety is a term used, in De&De, to refer to DivR 0 characters. I suppose if you actually get "Shapechange into Sarrukh, give viper familiar Manipulate Form, return to normal form, have familiar give me Manipulate Form" past your DM, then why the fuck not argue "well, this ability should totally grant DivR, and I should be able to increase that!"?
That's about it for limits "must be extraordinary, supernatural or spell like, or a physical change. If increasing ability scores, score cannot exceed own." So you can increase your Tiny Viper familiar to colossal size, so that it's str goes to 44, have it give you that 44 str, return it to tiny, increase it's str to 44, etc. You can do similar with dex and con. Mentals are more difficult, though you can get Wish as a spell like, and use elabourate chains of dominated awakened lizards to balloon your stats without using wish on yourself once.
edit: Ok, I saw the Divine Ice Assassin thing in the other thread. Sure, I suppose that technically works.