Spirit shield

Version 0.28: This article may not be up to date for the latest stable release of Crawl.

Spirit shield is an ego only found on moon troll leather armour, the hat of the Bear Spirit, and some randarts. This ego duplicates the effect of an amulet of guardian spirit, linking your HP and MP pools so that all damage you take will be split proportionally between them. This even affects normally hard-to-resist damage sources such as torment and smiting. Should your MP reach zero, damage will be taken entirely from your HP until at least one MP is restored.

Deep dwarves with Spirit shield behave differently; Their MP is set to zero and their MP stops regenerating, but other methods of restoring MP still function normally. Vine Stalkers innately possess the Spirit Shield trait and are not further affected by items with spirit shield.

Damage Reduction Example

If you have 200 HP and 20 MP, an 11 damage attack will reduce your HP by 10 and your MP by 1. Characters with more balanced HP:MP ratios will see much more dramatic reductions to HP loss.

History

• Prior to 0.26, sources of spirit shield would reduce anyone's current MP to 0.
• Prior to 0.25, scarves could have the spirit shield ego.
• Prior to 0.20, hats could have the spirit shield ego.