If you manage to anger your god to the point of them sending a minion while still an atheist, and your crowning artifact does not yet exist, there is a very small chance that one of the minions will be carrying the crowning artifact.

Your god will not give you random prayer boons until after you have received a sacrifice gift from them. (They will still fix troubles when you pray.)

You can apply the Master Key of Thievery to an iron chain you are shackled to, which unlocks it and unpunishes you. Possibly, if your god is smiting you while you have the Key, they will avoid choosing punishment since you can easily escape from it.

Wielding Mjollnir (or potentially any artifact) after it was gifted by your god requires the god to spend constant divine attention on powering it. In game terms, this means that your prayer timeout will never drop below some minimum of a few hundred turns, because the god will not take kindly to requests for more assistance after they are already constantly giving you it.

Alternate god smitings (to go alongside striking with lightning): chaotic gods or Moloch try to create lava around and underneath you, and neutral gods blast you in a magical explosion that instakills you if not magic resistant, curses all your items, strips any charges from charged items and disenchants gear to something highly negative.

If you pray while there are hostile monsters near you, your god may decide to answer the prayer by frying all the monsters around you with lightning (sparing pets and peacefuls). This would work best when there are a bunch of hostiles right near you but none a medium distance away. Possibly it should be suppressed when your HP is low, but then again restoring your health while leaving you surrounded by monsters often doesn’t give you high odds of surviving.

The hero is not credited with killing the monsters, and gains no experience or penalties.

If you would receive your first sacrifice gift, but it already exists in the game somewhere, your god will inform you of where it is (or possibly that it no longer exists, if something destroyed it).

Converting an altar is made easier to do in terms of RNG (either increasing the odds or making the conversion guaranteed after some number of sacrifices), but in compensation for that, all attempted sacrifices cause the altar’s god to get angry at you and smite you, with the penalty dependent on your XL or level difficulty. They can do things like curse your items, give you negative protection, send minions to defend the altar, and blast you with lightning and disintegration if at a high enough level.

If someone of a different god steals the Amulet from you on the Astral Plane and sacrifices it to their god, your god will hit you with a wide-angle disintegration beam in frustration that you got so close and then blew it.

In variants where you can gamble away, sell, or otherwise lose your soul: a character who has lost their soul will get no more help from their god (until they manage to recover it). Sacrifices will be accepted but will never get rewarded with a gift; otherwise successful prayers will fail to give you shimmering-light invincibility, will go unanswered, and will give you no message as to the pleasedness of your god, and possibly you lose your divine protection as well.

Gods should react in some way when the corpse of one of their own priests is sacrificed. They currently don’t (unless it’s a same-race sacrifice) and this is weird.

Make it easier to destroy non-high altars, perhaps by something as simple as digging them, but destroying an altar will cause its god to smite you hard. If you destroy a crossaligned altar, your god rewards you for it.

The more gold you pay to a priest, the stronger his god becomes. Newly generated priests of that god could get better equipment, or altars of that god might be harder to convert. In Moloch’s case, Gehennom gets slightly harder if you pour a lot of gold into his temple. This applies with money donated to your own god as well, but the effects are naturally less visible since you won’t go around fighting your own priests or converting your own altars.

Praying while standing on a throne, assuming you’re in good standing with your god, causes the god to have an increased chance of crowning you. Possibly, they always crown you if they decide to grant a boon and you are in good enough standing to be eligible for crowning.

Gods can grant you (unique?) pets as a sacrifice gift, or possibly a prayer boon. Example here was Sleipnir for valkyries. If it’s a steed, it will always be saddled.

Increase the rate at which annoyed gods will send down minions to defend their altars from being converted, since this rarely happens.

Possibly, your god will not crown you until you have completed some milestone (finished the quest, probably, but also could be going to Gehennom and back).

Shamans count as clerical spellcasters and follow a god. If they follow your god, they are peaceful. Killing them will anger their god.

If a god doesn’t have any good artifacts or spellbooks to grant you as a sacrifice gift, they give you a prayer boon instead.

Your god considers both your luck and your alignment record when deciding whether to grant a prayer, and weighs alignment record more heavily. That is, if you have negative luck but good alignment, your god will often still grant the prayer, and positive luck might save you from bad alignment, but not often.

If you get hit by something reflectable, have no other source of reflection, and prayer timeout is 0, your god may rarely intervene (“But it reflects somehow!”). This could either increase timeout a smallish amount or not increase it. Does not break atheist conduct.

Alternatively, instead of “using” prayer timeout, automatically spend a couple points of divine protection. Because you would have had to break atheist to get that, the atheist problem doesn’t apply.

One possible “trouble” if you are praying is having more than a certain total level/total difficulty of hostile monsters around you relative to your own level. If your god decides you are in trouble from this and decides to fix the trouble, they will teleport you horizontally somewhere else on the level far from any monsters. If the level is non-teleport, they will instead lift you up one level like a potion of gain level would. If that cannot be done, they will not attempt to fix it.

Divine lightning (a god smiting you, particularly Moloch when you attack his high priest) should ignore reflection; it’s a “wide-angle” blast of lightning. Maybe this should apply to the lightning monster spell too. The high priest of Moloch should also be shock resistant.

If you pray at low HP with a single hostile monster in the vicinity, your deity might decide to “fix” the problem by smiting them to death.

Dropping a lit candle on a coaligned altar gives you some message about your standing with your god and your ability to pray safely. The candle is consumed in the process, and possibly the beatitude matters (with a cursed candle plus an angry god ending in a fiery explosion). Some unspecified bad thing happens if you try this on a crossaligned altar.

If you attempt to put on a helm of opposite alignment in the Astral Plane, your god is angered and disintegrates it off your head before your alignment changes.

In the last level of the Dungeons of Doom (normally the Castle), the powers of your god and Moloch are approximately equal, and prayer may or may not work here. (The Valley is strictly Moloch’s territory.)

The ascension run through the Dungeons of Doom (the instant you come back into your god’s sphere of influence) is trivially easy: your god will regularly smite any enemy that dares attack you, and will ignore prayer timeout when answering prayer (but only to fix problems; if timeout is not 0, the god will not grant you any boons.) However, once you reach the Planes, the other gods step in and start interfering with the god so that they can’t directly help you anymore. These other gods don’t want to kill you since you’re still bringing the Amulet closer to them. But when you reach Astral, the other gods will do all they can to kill you, relieve you of the Amulet, and bring it to their own high altar. Your god sends you several A (might be Aleaxes, ki-rins or possibly even Archons) instead of just one, but you are now faced with elite teams of player monsters, priests, and A sent by the other gods, who have amulet-stealing attacks. The gods’ struggle to each get the Amulet manifests in all sorts of ways: disintegration beams blasting at you but being redirected onto a hapless monster nearby, inventory cursing, lightning bolts, resurrecting the corpses of dead player monsters or priests, and so on.

Uncontrolled teleportitis counts as a minor trouble; a god may decide to fix it by removing it, but only if there are no other troubles. If there are other troubles, teleportitis will not be removed.

Lawful and neutral gods are angered (or do something angry) if you consort with a foocubus on their altars or in their temples.

Gods are more likely to give gifts for higher-difficulty sacrifices.