Summon Mana Viper

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Version 0.28: This article may not be up to date for the latest stable release of Crawl.
Summon mana viper.png Summon Mana Viper
Level 5
School1 Hexes
School2 Summoning
Source(s) Book of Beasts
Book of the Wilderness
Casting noise 4
Spell noise 0
Power Cap 100
Flags Mons abjure
Summons a violet-scaled serpent whose bite can swiftly drain the magical reserves of nearly any foe. At higher power, the antimagic properties of the viper's bite grow even stronger.

Summon Mana Viper is a level 5 Hexes/Summoning spell which summons a single mana viper.


A mana viper is summoned. Higher spell power increases the strength of the creature. Players have a summon cap of 1; casting the spell again will cause the old summon to very quickly time out.

The hit dice of the mana viper is 5 + <power> / 12, randomly rounded. In this case hit points are not increased based on the hit dice.[1]

Duration of the summon is around 18 turns, it does not depend on the spell power.


Mana vipers are fast and moderately durable, with a decent melee attack. Spellcasters hit with its antimagic bite suffer a significant chance of failing any spells they attempt to cast. However, they aren't a reliable means of disabling casters: they don't have the best durability, are vulnerable to the Abjuration spell, and you can only summon one at a time.

Monster Version

Creates multiple mana vipers based on the spell power, their hit dice is not adjusted. Duration is the same as in the player version.

The following enemies cast Summon Mana Viper:


  • Prior to 0.28, this spell had a summon cap of two.
  • Summon Mana Viper was added in 0.14.