Mana Sickness

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Desktop/Console/Old-gen console/Mobile-Only Content: This information applies only to the Desktop, Console, Old-gen console, and Mobile versions of Terraria.

Mana Sickness is a debuff that reduces the player's magic damage after they consume any mana-restoring item. Automatically drinking Mana Potions with the Mana Flower will also cause the debuff. Whenever a mana-restoring item is consumed, the player is inflicted with 5 seconds of Mana Sickness[1]. The percentage of magic damage reduction is proportional to the remaining debuff duration (see Notes for formula), reducing by 1% every 1/5 second; at 5 seconds remaining, the damage reduction is 25%. All mana-restoring items inflict the same length of the debuff; for example, a Lesser Mana Potion induces the same duration of Mana Sickness as a Greater Mana Potion.

(Desktop, Console and Mobile versions) If the player consumes additional mana-restoring items while the debuff is active, the duration will be increased by 5 seconds for each item consumed, up to a maximum of 10 seconds (50% damage reduction).[2]

The magic damage reduction is multiplicative rather than additive, and is applied after all damage multipliers. For example, if the player has +100% damage from buffs and items, the total damage with the debuff at 5 seconds left comes to 150% (200% × (1 - 25%); -25% comes from Mana Sickness).

Causes

From item

From Duration
Lesser Mana PotionLesser Mana Potion 5 seconds
Mana PotionMana Potion
Lesser Restoration PotionLesser Restoration Potion(Old-gen console and 3DS versions)
Greater Mana PotionGreater Mana Potion
Super Mana PotionSuper Mana Potion(Desktop, Console, Old-gen console and Mobile versions)
Restoration PotionRestoration Potion 5 seconds (Old-gen console and 3DS versions)

Notes

  • The magic damage reduction is calculated by the following formula, with the remaining debuff duration measured in ticks.[3][4]
\text{Reduction multiplier}=0.25\times\frac{\text{Debuff duration}}{300}

See also

History

  • Desktop 1.3.0.1: Now the duration stacks and damage-reducing effect increases if mana-restoring items are consumed while the debuff is active, up to 10 seconds and 50% lowered magic damage.

References

  1. Information taken from the Desktop version Desktop 1.4.4.9 source code, method ApplyLifeAndOrMana() in Terraria.Player.cs and field manaSickTime in Terraria.Player.cs.
  2. Information taken from the Desktop version Desktop 1.4.4.9 source code, method AddBuff() in Terraria.Player.cs and field manaSickTimeMax in Terraria.Player.cs.
  3. A tick is a time unit countable by the software. Most of Terraria's updating logic happens every tick. A tick has the length of 1/60th of a second, hence there are 60 ticks in a second and 3600 ticks in a minute.
  4. Information taken from the Desktop version Desktop 1.4.4.9 source code, method UpdateBuffs() in Terraria.Player.cs and field manaSickLessDmg in Terraria.Player.cs.