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 any of the following negative status effects you may be suffering from: confused, paralyzed, slow, silenced, petrifying/petrified, liquefying, sentinel's mark, Sap Magic, fire/poison vulnerability, dimension anchor, antimagic, and corona. It also immediately purges all magical contamination you are currently suffering from.
Unfortunately, it also cancels teleport control, imminent teleport, haste, swiftness, might, agility, brilliance, phase shift, invisible, stealth, darkness, repel missiles, deflect missiles, fire shield, icy armour, condensation shield, stoneskin, resistance, magic shield, shroud of golubria, confusing touch, sure blade, branded weapon, charged Delayed Fireball, Olgreb's Toxic Radiance, Portal Projectile, death channel, disjunction, and regeneration.
After one turn, the potion additionally cancels flight and all transformations.
Notably, it does not affect Death's Door, lowered MR, Quad Damage, Tornado, Infusion, Song of Slaying, the Elixir Card, Dragon's Call, Aura of Abjuration, or Powered By Death. It also ignores physical effects like poison and liquid flames, mental effects like berserk, sleeping, and fortitude, and god-specific effects.
The same cancellation effect occurs when you are hit by a Quicksilver Bolt or sometimes by Sif Muna's punishment.
Strategy
If you need to remove an artefact which contaminates you upon removal, you may want to have one of these potions on-hand.
History
Potions of cancellation were added in 0.15, partially taking the role of scrolls of vulnerability.
