My party managed to secure the help of Orcus, Malcanthet and Morwel so far, and next on their list is Obox-Ob. Since I don't like the encounter as written (the party doesn't have to do anything really), I want to give them a chance to negotiate with him. He'll help them on his own against Demogorgon if one of the players would be willing to give him his body and soul. Esentially, Obox-Ob would give away a part of his demonic energy to the player, taking away his sould and transforming him into something else thus giving Obox-Ob a chance to strike against Demogorgon almost personally.
Question is... what would that 'something else' be? I was thinking some vermin-based template, but I can't think of any off the top of my head. Are there any official?
I'm fairly certain there is a Vermin Lord prestige class in the Book of Vile Darkness.
Even if you aren't looking to simply grant the PC access to a prestige class, it might be a good source to plunder ideas for powers that could be bestowed upon the character (maybe you could even create a vermin template, by crossing ideas from the Vermin Lord with an existing template such as Fiendish Creature from the 3.5 MM).
Maybe you could grant the character the ability to change shape as a druid of his level, except he can only take the form of some kind of vermin.
Perhaps grant the PC a couple spell-like abilities, usable one to three times per day, that are vermin themed. Spells such as Summon Swarm, Giant Vermin, and Creeping Doom seem like obvious choices.
Of course, whatever you choose, should also come with a telepathic hive-mind link straight to the former prince of demons himself. Probably should throw some random dominate effects in there as well. Always good to fix a multi-faceted eye on those fanatic devotees!
I decided to go with the Insectile template from Savage Species. It gives him the following abilities:
- 4 extra arms
- +2 natural armor
- Darkvision
- Tremorsense
- Wide vision (because of multi-facted eyes, of course) - +4 on spot checks and can't be flanked
+4 Dex, +2 Wis
It's a LA+2 template, and most of the abilities aren't that powerful at this point, the only thing that concerns me are those 4 extra arms. Since the character who'll most likely to get take up Obox-Ob on his offer is a dual-wielding Dervish, he would get a crazy number of attacks if he started using scimitars in all of them, so I'll just say that they aren't strong enough for holding weapons and instead give him ability that Fang of Lolth has - if he drops to all fours (sixes in his case) he gains +20 bonus to his speed.
To counter the LA, I'll rule that since his soul belongs to Obox-Ob, he can't be rasied or resurrected ever again and his aligment shifts to evil.
Thoughts?
Oh yeah, I forgot. I was thinking about giving him a tongue attack (since Obox-Ob has one) making his jaw look like those the Reapers from Blade II have.
http://www.yourprops.com/norm-49b95595e1f70-Blade+2+(2002).jpeg
Or perhaps to keep his appearance more human, just an elongated tongue like Toad from X-men has?