I've been tinkering and consolidating the various rules/spells/items/etc. for calling/binding outsiders and I noticed something interesting.
Both greater planar ally and greater planar binding have an 18 HD limitation. Yet the section on binding outsiders in the Ultimate Magic repeatedly references calling or binding outsiders with HD above that range (Balors, Draconals, Pitfiends, Solars, etc).
I see how gate circumvents that limitation for calling 18+ HD outsiders (its essentially a super planar ally spell) but there doesn't appear to be a Pathfinder canonical way to bind 18+ HD creatures. Am I missing something?
Also, given the Pathfinder rules for binding outsiders, how do people feel about the ensnarment and implore spells from Dragon magazine 336?
For those without access, ensnarment grants a +4 bonus v. SR of the target and allows the caster to use Intelligence instead of Charisma for Charisma checks but costs an extra 1,000 gp. Its clearly more useful for a wizard or sage bloodline sorcerer than any other kind of sorcerer but its available to both. I'd probably also allow it for witches given its creator/most famous user...
Implore allows the caster to bind a single creature of up to 22 HD, had an xp cost which converted to Pathfinder equates to 1,250 gp/HD (so max of 27,500 gp), imposes -4 penalty to the Will save/Charisma checks, ensured no double dealing, and granted the target a cumulative +1 bonus v. being called for 1 year.
Implore also required the caster to know the target's true name, which under the Ultimate Magic imposes a -5 penalty to the Will save and Charisma check. I think a total of -9 is a bit much, but then again you're paying more for a 22 HD binding than you are for a wish spell.