Eldritch Portals

This mod adds new custom events that will cause portals to spawn on random empty squares. These portals periodically spawn horrors and at set turn numbers will have a chance to "grow" to a new type of portal that can spawn even stronger horrors. The portals have a chance of shrinking back to a smaller size or closing entirely when owned by a player faction. Though dangerous monsters emerge from the portals, these places of power are attractive to magic users and count as libraries. This mod should be enabled if a game where horrors are a more consistent threat, and alternative ways to access magic libraries is desired. I would recommend using this with my, "No Void Portals" and/or "No Planar Invasions" mod, so that this does not compound with default horror spawning and events and become too tedious.

Details

At game start, 1 "rift in reality" will spawn on a random square with a few soultorns.

Every turn there is a 2% chance a new rift will open on a random empty square.

A "rift in reality" counts as 1 library and can be owned by any class. When the rift is owned by a player it has a 5% chance to close every turn. At the middle month of every season there is a roughly 15% chance that the rift will spawn a number of lesser horrors. There are multiple "rolls" so occasionally this may spawn multiple types of horrors.

After turn 50 any "rift in reality" not owned by a player faction has an additional 2% chance each turn to become an, "Eldritch Portal". The "Eldritch Portal" counts as 2 libraries and when owned by a player has a 5% chance each turn to revert back to a "rift in reality". At the middle month of every season there is a roughly 27% chance that the portal will spawn a number of lesser and greater horrors.

After turn 100 any "Eldritch Portal" not owned by a player faction has an additional 2% chance each turn to become a, "Yawning Chasm". The "Yawning Chasm" counts as 3 libraries (yes they can be used to promote wizards to a level 3 caster) and when owned by a player has a 5% chance each turn to revert back to an "Eldritch Portal". At the middle month of every season there is a roughly 27% chance that the chasm will spawn a number of lesser and greater horrors. Separately there is a 12% chance that a chasm will spawn a very powerful horror. This will only occur once per game.

***Newly Added***

The Demonologist, Witch, and High Cultist factions now have a new one time use level 3 ritual that can only be used on a "Yawning Chasm". The idea with this addition was to give a few factions additional mechanics revolving around the portals, and also add a new game play element to the factions with "unpredictable summons" in the form of rare opportunities to get a 100% certain summoning.

Demonologist

Infernal Pact

Level 3 Ritual

1000 Sacrifices

Learned for free when promoted to level 3.

Can only be cast on a Yawning Chasm

Can only be cast once per game

Destroys the Yawning Chasm

Same effect as Summon Demon Lord but with no chance of failure.

Witch

Ancient Pact

Level 3 Ritual

600 Fungus

Learned for free when promoted to level 3.

Can only be cast on a Yawning Chasm

Can only be cast once per game

Destroys the Yawning Chasm

Same effect as Contact Old Ones but with no chance of failure, and Mortal Gorgon removed as a potential summon.

The Stars are Right

Level 3 Ritual (For the Star Spawn)

200 Sacrifices

Learned for free when promoted to level 3.

Can only be cast on a Yawning Chasm

Can only be cast once per game

Does not destroy the Yawning Chasm

Same effect as Call Outer God but with no chance of failure, and Eldritch Abomination removed as a potential summon.