Energy: Difference between revisions

Latest revision as of 22:12, 5 February 2026

Version 0.34: This article is up to date for the latest stable release of Dungeon Crawl Stone Soup.

It may return the magic spent to cast spells, but lowers their success rate. It always returns the magic spent on miscasts.

The Energy ego occasionally refunds MP when casting spells. It can only be found on orbs.

When successfully casting a spell, this ego gives a 15% + 30*Evocations/27 chance to have the full MP cost refunded. When you miscast a spell, you will always have MP refunded. However, it increases your raw spell failure chance by +10%, added. (For reference, the first stack of wizardry reduces raw spell failure by x75%.)

Note that this does not mean that your spell failure actually increases by +10%, as its modified by a function. See the Spell Success page for details. For example:

If you have a spell with 6% failure, an orb of energy increases it to 17% actual failure.
If you have a spell with 2% failure, an orb of energy increases it to 8% actual failure.
For spells with 1% failure, it varies depending on your casting ability. A 1% failure might increase to 2% or 9% actual failure.

Orbs of energy do nothing for Djinni; there is no benefit or penalty. Djinn of Ashenzari can use them as a placeholder item for an extra curse if they don't have a shield yet.

History

Prior to 0.34, the chance of recovering MP on successful cast was 20%; it did not depend on Evocations.
Prior to 0.30, channeling was different, You had a 2 * Evocations / 108 chance to regain MP on any cast. Each time this happens, the channel could "backfire" - you have a 1 / (Evocations - MP cost) chance of either being confused for 1 + 1d4 turns or losing 1-5 intelligence. It did not increase failure rate.
This ego was introduced, along with orbs, in 0.28.

Orbs
Attunement • Energy • Glass • Guile • Light • Mayhem • Mesmerism • Pyromania • Stardust

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-{{stub}}
+{{version034}}
-The '''Energy''' [[ego]], exclusive to [[orb]]s, passively refills your MP when casting a spell. You have an <code>Evocations / 54</code> chance of regaining the MP used in the spell (50% chance at 27 Evocations)<ref>{{source ref|0.27.1|spl-cast.cc|669}}</ref>, . Each time this happens, you have a <code>1 / (Evocations - MP cost)</code> chance of either being confused for <code>1 + 1d4</code> turns or losing 1-5 [[intelligence]].
+{{flavour|It may return the magic spent to cast spells, but lowers their success rate. It always returns the magic spent on miscasts.}}
-Wielding the [[Staff of Wucad Mu]] will triple the chance of success and dramatically lower the backfire rate.
+The '''Energy''' [[ego]] occasionally [[channel|refunds MP]] when casting spells. It can only be found on [[orb]]s.
+When successfully casting a spell, this ego gives a <code>15% + 30*[[Evocations]]/27</code> chance to have the full MP cost refunded. When you [[miscast]] a spell, you will always have MP refunded. However, it increases your ''raw'' [[spell failure]] chance by +10%, added. (For reference, the first stack of [[wizardry]] reduces raw spell failure by x75%.)
+Note that this does not mean that your spell failure actually increases by +10%, as its modified by a function. See the [[Spell Success#Final Step|Spell Success]] page for details. For example:
+*If you have a spell with 6% failure, an orb of energy increases it to 17% actual failure.
+*If you have a spell with 2% failure, an orb of energy increases it to 8% actual failure.
+*For spells with 1% failure, it varies depending on your casting ability. A 1% failure might increase to 2% or 9% actual failure.
+Orbs of energy do nothing for [[Djinni]]; there is no benefit or penalty. Djinn of [[Ashenzari]] can use them as a placeholder item for an extra curse if they don't have a [[shield]] yet.
+==See also==
+*[[Crystal ball of Wucad Mu]]
+==History==
+*Prior to [[0.34]], the chance of recovering MP on successful cast was 20%; it did not depend on Evocations.
+*Prior to [[0.30]], channeling was different, You had a <code>2 * Evocations / 108</code> chance to regain MP on any cast. Each time this happens, the channel could "backfire" - you have a <code>1 / (Evocations - MP cost)</code> chance of either being confused for <code>1 + 1d4</code> turns or losing 1-5 [[intelligence]]. It did not increase failure rate.
+*This ego was introduced, along with orbs, in [[0.28]].
+{{orb}}