Each Rider has the ability to use their attack to destroy items you’re carrying that are antithetical to their purpose, which replaces their normal attack.

• Death destroys amulets of life saving.
• Pestilence destroys all types of healing potions.
• Famine destroys horns of plenty and food items.

It is possible to leave bones on Astral. If this happens, instead of a ghost, there will be a fourth resurrecting Rider, War, with all the equipment of the dead player, 100% of it cursed.

An alternate ending triggered by invoking a ring of conflict when within sight of all three Riders. You then take up your true identity as War and the other Riders congratulate you. Possibly tie this into the “break the Amulet” ending, in which case this would massively power you up but not end the game until some other condition had been met.

All Riders have intrinsic player-style MR, making them immune to death rays, but summon insects and summon nasties don’t work on the Astral Plane.

Certain monsters (e.g. the Riders) shouldn’t be able to be frightened by getting a ghost from a bottle.

Attempts to analyze good instadeaths versus bad instadeaths (loosely defined as ones that are instant hard-to-avoid deaths that aren’t really similar to running out of HP):

• Poison, digestion, lava, death magic, and drawbridge instadeaths can easily be converted into HP damage of max(damage dice roll, substantial % of your max HP).
• Drowning and choking would be well-suited to a breath system, where it becomes a delayed instadeath. Especially so if you can stop the clock by putting on an amulet of magical breathing or praying.
• Intelligence drain and level drain generally can’t happen without the player being given ample time to escape, so they are fine.
• Starvation could be changed to HP loss, but you usually just die from side effects of fainting anyway.
• Instadeaths that almost always have to be intentionally caused by the player (self-genocide, divine wrath etc) are generally fine as-is.
• Instakilling artifacts are problematic, because there is currently no recourse except for the amulet of life saving.
• Eating or digesting the Riders should not instakill without warning, because it is now unexpectedly a bad idea to eat a reviving corpse, whereas it had been a good idea in the rest of the game.
• Good instadeaths generally use unusual resources to fix, or hit the player’s reserves in an unexpected way, and allow the player a chance to get out or stop it before dying.

Instead of pushing pets out of the way as they do other monsters, the Riders can trample over pets, instakilling them.