Mordinvan's page

Right but that doesn't answer if you can use it repeatedly to build a building over multiple turns, or just once for a given building. It would be fair to call the wording ambiguous, as it says it can only be used once per turn, to reduce a single building's cost, but if that building is made over the course of multiple turns can it be used on the same building over each of those turns. It seems very strange to me that an army of magical workers can only touch a construction project once, but never again.

Is it possible to build an building over multiple turns using a lyre of building, using it's ability to pay 1BP/turn, over several turns to build a building with a cost of X BP over X turns?

Is it possible to build an building over multiple turns using a lyre of building, using it's ability to pay 1BP/turn, over several turns to build a building with a cost of X BP over X turns?

Namely, the spell cannot possibly be a conjuration (calling) if reducing it to zero HP (or assisting the would-be Hellknight) causes it to abjure itself; that's the behavior of a conjuration (summoning) spell. Calling spells actually bring the creature, not an expendable avatar of the creature; reducing a called creature to zero HP makes it disabled or (for certain types such as undead and constructs) dead, not abjured / dispelled.

You'll have to find a errata for this to be established, as written it is a CALLING

So now that we can establish that infernal challenger is supposed to be a conjuration (summoning) spell, we can apply a general rule of such spells: summoned creatures cannot summon.

Except it is Calling, not summoning, thus this is not a solution. The question is WOULD it do so, not COULD it do so. The spell as written says yes to both in my mind. I am looking for reasons it would NOT do so, and you're suggesting changing the spell, which isn't an answer to how the spell functions as written.

deal makers that follow the word of the law not it's spirit. If they agree to one on one combat, that is what you'll get. Now... dirty tricks and such, if they where not agree'd upon would end up being used.

and states it is prepared to do battle with a sole mortal champion.

It says do battle with a sole mortal champion, not do battle ALONE with a sole mortal champion. I think you're reading something it doesn't say.

This spell says it summons a Bearded Devil to fight a selected champion as part of a hell knight ritual. The spells says the Devil will use every means at it's disposal to kill the champion. I believe this would include using it's summon ability to bring into existence a second Bearded Devil. I have a friend who says that wouldn't happen as it is supposed to be a one on one fight. To me that seems to be pulling it's punches, as opposed to going all out. Can anyone provide meaningful advice?

In a campaign we're presently in we have acquired some steam technology based cybernetic enhancements. I'm curious if anyone here as a suggestion at which point these "equipment bonuses" to our stats might be considered permanent in nature? Would it be after the normal 24 hour period? Some time after that? or never?