Effect

An effect is a helpful or harmful condition that affects an entity. More general information on effects is available at the official Minecraft wiki.

In addition to the vanilla effects, Thaumcraft 4 adds several new effects:

Name	Effect	Type	Sources
Taint Poison	Inflicts damage over time (can kill). Certain mobs that die while this effect is active will become tainted versions of themselves.	Negative	Dissolving taint tendrils and tainted goo Standing on or in a tainted block Tainted creeper explosions Thrown bottled taint Infusion instability events
Flux Flu	Reduces the player's vis discount (-10% per level).	Negative	Standing in flux goo or flux gas Infusion instability events Warp events
Blurred Vision	Blurs the player's view.	Negative	Warp events
Deadly Gaze	Mobs within the player's line of sight are given the Wither effect.	Situational	Warp events
Flux Phage	Reduces the player's vis discount (-10% per level). Spreads contagiously to other nearby mobs and players. New victims will contract the effect at one level lower than the host mob that gave it to them. If the host mob has Flux Phage I, it spreads Flux Flu instead.	Negative	Spread from other mobs Warp events
Sun Scorned	Heightens the contrast of the player's view and occasionally sets the player on fire when in direct sunlight. In near-darkness, the player is healed over time instead.	Situational	Warp events
Unnatural Hunger	Gives the player's view a reddish tint and rapidly depletes the player's hunger meter. Cured by eating zombie flesh or zombie brains (1 level per item consumed).	Negative	Warp events
Thaumarhia	Occasionally leaves puddles of flux goo at the player's feet.	Negative	Warp events
Warp Ward	Blocks all warp events from occurring.	Positive	Bathing in purifying fluid

None of Thaumcraft's effects except Taint Poison and Warp Ward can be cured by drinking a milk bucket when given to the player by conventional means.