Potion of cancellation
| Type | Potion |
|---|---|
| Name | Potion of cancellation |
| Icon | 
|
| A potion which ends most magical effects, good or bad, affecting you. |
Quaffing a potion of cancellation immediately ends nearly all status effects you may be enjoying/suffering from. It also removes 1-5 points of magic contamination.
Contents
Affected Status Effects
The list of all affected status effects is as follows:
The Bad
- Antimagic (monsters only)
- Bad forms
- Confusion
- Corona
- Corroded
- Dimension Anchor
- Vulnerability
- Paralysis (impossible in game, but works per Crawl's code)
- Petrifying
- Petrified (impossible in game, but works per Crawl's code)
- Sap Magic
- Sentinel's Mark
- Silence (so long as you are the source of the aura)
- Slow
- Virulence
The Good
- Agility
- Brilliance
- Condensation Shield
- Confusing Touch
- Darkness
- Death Channel
- Delayed Fireball
- Disjunction
- Excruciating Wounds
- Haste
- Invisible
- Liquefying (so long as you are the caster)
- Magic shield
- Might
- Olgreb's Toxic Radiance (so long as you are the caster)
- Ozocubu's Armour
- Phase Shift
- Portal Projectile
- Regeneration
- Repel/Deflect Missiles
- Resistance
- Ring of Flames
- Stealthy
- Shroud of Golubria
- Stoneskin
- Sure Blade
- Swiftness
- Tele
- Teleport Control
- Warp Weapon
Resistant Status Effects
Rather than being dispelled outright, these status effects will have their duration set to 1 turn.
- Flight
- All Bad Forms
- All Transmutations not listed above
Unaffected Status Effects
The Bad
The Good
- Aura of Abjuration
- Berserk
- Death's Door
- Dragon's Call
- Elixir
- Fortitude
- Infusion
- Powered By Death
- Quad Damage
- Song of Slaying
- Tornado
- All god-granted status effects
The same cancellation effect occurs when you are hit by a Quicksilver Bolt or sometimes by Sif Muna's punishment.
Strategy
Confusion can be removed with the far more common potion of curing, which lets one save potions of cancellation for more obscure, but no less dangerous, status effects, such as petrification, slow, and Sentinel's Mark. Its ability to cancel Mark makes it particularly useful in the Vaults, especially for a character with poor magic resistance. Finally, if you find yourself with dangerous levels of contamination, one or two of these potions may bring you back to safe levels while avoiding the usual bad effects. However, unless there are many cancellation potions on hand, one should be wary of using cancellation potions simply for the purpose of glow removal outside of combat, as getting hit with an ill-timed Mark or Slow tends to be more dangerous than suffering one or two contamination effects with no monsters around, particularly if you have several potions of cure mutation lying around.
Be very careful when drinking a potion of cancellation if flying over deep water or lava, as you will only have one turn to restore your flight or otherwise reach safety, and the game does not warn you of the potential danger in doing so. If you have no other means of flight, a scroll of blinking can help you reach safe grounds. Unfortunately, death by drowning or incineration is instantaneous, so you will not be able to teleport after the flight ends.
History
Potions of cancellation were added in 0.15, partially taking the role of scrolls of vulnerability.
| Potions |
|---|
| Ambrosia • Attraction • Berserk rage • Brilliance • Cancellation • Curing • Degeneration • Enlightenment • Experience • Haste • Heal wounds • Invisibility • Lignification • Magic • Might • Mutation • Resistance |
