Random Effects Report

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page revision: 07, last edited: 15 Mar 2019

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Tomb Prospectors Report on Random Effects in Chalice Dungeons [by DrAnger90 on Feb 23,2018]

Root dungeons can have rites tied to them: Sinister, Foetid, Rotted and Cursed. There are multiple effects a root dungeon can get without the use of these four rites. They are completely random and will change with every root dungeon you make. These effects are:

Poison effect (20% chance in Pthumeru, 100% in Hintertomb, 0% in Loran and Isz)

4th layer (20% chance, 0% in Sinister chalices, 0% chance in Pthumeru Root (depth 1))

All these effects work independant of each other, so a root dungeon can have all three effects or none at the same time.

The poison effect makes pools of water change to pools of poisonous water and smoke urns will change to urns with purple poison mist. Water with oil will not change. Some enemies will get a purple aura around them that will poison you when you get attacked by them.

Theres a 40% chance the special enemy/shop effect will be applied to a root dungeon. What does that mean?

A root dungeon basically consists of multiple layouts stitched together. Some of these layouts will have fixed spawnpoints that is used for the special enemy/shop effect. The easiest one to remember is the layout with the well.

The special enemy/shop spawnpoint will be in the bottom centre of the well and will be a small chest in this case.

It is possible (pretty rare though) for a layer to NOT have a spawnpoint for this effect, even if there are layouts that can support it.

These spawnpoints are also used when the effect special enemy/shop is not applied on the dungeon.

If you have multiple copies of the same dungeon, all will have the exact same spawnpoints. What actually spawns on them depends on the following:

40% chance the dungeon has a special enemy/shop effect that consists of:

1b. 3% chance a single rare shop (Patches the Spider) will spawn in the dungeon,

2a. 10% chance Beast-Possessed Souls (BPS for short) will spawn in the dungeon,

2c. 6% chance BPS’s + 1 rare shop (Patches the Spider) will spawn in the dungeon.

For cases 1a and 1b: All other spawnpoints in the dungeon will behave as if there was no extra effect at all.

For cases 2b and 2c: One spawnpoint in the dungeon will be a shop, all other will have a BPS.

For Patches the Spider to appear you have to finish his quest in the main game. If the quest is not finished, a normal bath messenger will appear instead.

30% chance the dungeon has a special enemy/shop effect that consists of:

Shop spawns seem to be a fixed part of the dungeon. So if you have multiple copies of the same dungeon, the shop will always appear in the same layer and place if the special enemy/shop effect decide to spawn one. It is also possible a shop will be on layer 4. This means it is possible a dungeon can have a shop on layer 4 while the dungeon has only 3 layers.

In 30% of the cases we know what the dungeon will spawn on these special enemy/shop spawnpoints, but what will spawn when the special enemy/shop effect is NOT applied on the dungeon?

It depends on the layout. At the bottom is a complete list of known special enemy/shop spawnpoints and the names I gave them. There are 3 different spawns possible if the effect is not applied on the dungeon: small chest, chest+enemy and double wandering nightmares.

The first two are the most common and appear in multiple layouts. Double wandering nightmares only appear in one type of layout, but it is still pretty common. The loot in the chests can be different from chest to chest. The chest+enemy spawnpoint was the hardest to figure out since it is pretty common to see throughout the dungeons outside of these spawnpoints. The enemy in front of the chest can be a Brainsucker or a Watcher. I can imagine other enemies are possible as well like Scourge Beasts, Madmen, Snatchers and Labyrinth Warriors but these are not confirmed yet.

This is the part where it becomes a bit tedious. Small chests and chest+enemy are NOT exclusive to the special enemy/shop effect. Just imagine treasure rooms where they can spawn, but you never see BPS or shops there. If you see a small chest on a known spawnpoint, you always know its a special enemy/shop spawnpoint. This does NOT work with chest+enemy. In a lot of cases chest+enemy are in layouts that can have special enemy/shop spawnpoints, but its actually not THE spawnpoint in that layer. That is the reason why it was so difficult to actually confirm this spawntype. It is NOT possible for BPS to spawn outside of the special enemy/shop spawnpoints, unless he is a boss.

BPS’s are hostile to other enemies, that means his spawn can interfere with enemies close. u/XTrinX confirmed in this video that enemies that were there with the small chest spawn got deleted when the BPS spawned instead. In the same video can be seen that sometimes the special enemy/shop effect will spawn corpses with items on the ground as well. This only seem to happen with the Roots spawnpoint.

So basically there are 2 types of dungeons you can get, dungeons with spawnpoints filled with BPS's and dungeons where no BPS will spawn at all. In both cases there is a slight chance a single spawnpoint will spawn a shop instead, either a bath messenger or Patches the Spider. So if you stumble upon a sleeping BPS in the first layer of your dungeon, you can expect them in the other layers as well!