Ozocubu's Refrigeration

Version 0.32: This article is up to date for the latest stable release of Dungeon Crawl Stone Soup.

Ozocubu's Refrigeration
Level	7
School1	Ice
Source(s)	Book of Ice The Unrestrained Analects
Casting noise	5
Spell noise	0
Power Cap	200
Flags	Area

Turns the air bitterly cold, freezing all other creatures in line of sight. This is less effective against creatures packed tightly together - those adjacent to others will be partly insulated from the cold, taking less damage.

Spell Details
Damage Formula	4d(7.5 + power/9) cold
Max Damage	4d30
Max Power	200
Range	LOS
Targeting	LOS
To-hit	Never Miss
Special	Damage reduced by 30% per creature adjacent to target(s), up to 2 creatures Can slow cold-blooded monsters

Ozocubu's Refrigeration (OR for short) is a level 7 Ice Magic spell which deals cold damage to all targets in line of sight. This ignores EV and has a 50% chance of slowing cold blooded targets.

However, for each monster hurt by this spell, the damage is reduced for every creature that is directly adjacent to said monster:

• One adjacent creature to target: 70% damage
• Two or more adjacent creatures to target: 40% damage

Strategy

This spell is a room-wide spell that is also decent at taking down single targets. It has full range and never misses, which are useful traits for any spell.

Against a large, widely spaced group, you'll be doing about 30 damage to every monster in your line of sight. Teleported inside Elf:3's final vault? 4 OR casts later, it is mostly empty. A room full of boggarts? Easy. The adjacent creature penalty is harsh, but multiple casts will kill the weaker creatures.

Tips & Tricks

• This spell can be used as an alternative to, or in conjunction with, Freezing Cloud. The latter is an area spell that works better against cramped enemies.
• Casting Ozocubu's Refrigeration in quick succession takes a lot of MP. You may want to keep up the pressure with the aid of potions of magic, MP restoration on kills from The Shining One or Vehumet, or Sif Muna's Channel Magic.
• This spell will hurt your allies if they aren't immune to cold.
  • Note that lightning spires, spellforged servitors, and derived undead (zombies, spectral things, simulacra) will not become hostile when attacked.
• A way to move adjacent monsters away from you is helpful; spells like Iskenderun's Mystic Blast make sure that you don't penalize Refrigeration's damage.
• This spell has an ironic synergy with a scroll of immolation, which helps negate this spell's "adjacent enemies" penalty. The inner flame enchantment creates a flame cloud on every enemy you hit. This increases damage output, allowing OR to deal more against a clump of enemies, Then, once you kill an enemy, the immolation will start a chain reaction, wiping out the rest of the pack.

Quality of Life improvements

The screen will flash blue every time you cast OR. Over time, that may seriously reduce the joy of using this spell. Fortunately, there is a setting you can add to your .rc file that will block all player animations (not just of OR...):

use_animations -= player

Monster Version

The version of the spell used by monsters functions in much the same way.

The following enemies cast Ozocubu's Refrigeration:

• e Fannar

History

• In 0.33, allies will not count for the adjacent creatures penalty.
• Prior to 0.30, Ozocubu's Refrigeration had harsher penalties for adjacent targets; it was reduced to 66% with 1 adjacent target, and 33% with 2.
• Prior to 0.29, Ozocubu's Refrigeration did not have a penalty when creatures were adjacent to each other, but prevented the player from drinking potions for 7-15 turns. It also dealt less damage (4d(5 + power/10)), but did not check AC.
• Prior to 0.27, Ozocubu's Refrigeration was a level 6 spell.
• Prior to 0.25, Ozocubu's Refrigeration dealt 25% less damage on-average and would also harm the caster.
• Prior to 0.15, this spell would not temporarily disable potions, but did have a tendency to destroy them.
• Prior to 0.14, Ozocubu's Refrigeration did not anger allies and did not wake up sleeping monsters.