Turmoil

Turmoil is a prayer in the Ancient Curses prayer book, which is unlocked after completing The Temple at Senntisten. Requiring 95 Prayer to activate, Turmoil has the highest Prayer requirement of all prayers in the game. It can boost the user's Attack, Strength, and Defence significantly when in combat against powerful opponents, making it the strongest melee-boosting prayer in the game.

Boosts
Turmoil offers a base 15% bonus to Attack and Defence, and a base 23% bonus to Strength; these boosts are always applied when Turmoil is active. However, once the user enters combat with an opponent, additional boosts are applied that are calculated based on the user's levels and the opponent's levels.

In order to calculate the percentage bonus from Turmoil, use the calculator provided below. Alternatively, you can view how the boosts are calculated here.

Calculator
 template = :Turmoil/Calc form     = turmForm result   = turmResult param    = att|Your Attack level|1|int|0-99 param    = str|Your Strength level|1|int|0-99 param    = def|Your Defence level|1|int|0-99 param    = opatt|Opponent's Attack level|1|int|0- param    = opstr|Opponent's Strength level|1|int|0- param    = opdef|Opponent's Defence level|1|int|0-

Limitations
Turmoil's primary limitations are its high Prayer requirement, that it cannot be used alongside any Sap Curses or Leech Curses, and that its usefulness is limited against opponents that do not use melee. Because some monsters only use Magic and/or Ranged, they are treated as having Attack and Strength levels of 1. Therefore, Turmoil will not offer its additional boost to Attack and Strength against such opponents, although Defence will receive its boost as normally. Some examples of popular monsters that do not use melee are aquanites, waterfiends, spiritual mages, aberrant spectres, Dagannoth Supreme, Dagannoth Prime, and the Phoenix.

Turmoil and Piety
Turmoil is noteworthy for being the "strongest" prayer in the game in terms of melee boosts. It is comparable to Piety in the standard prayer book, although the two differ in a number of ways. Piety's bonuses are constant and independent of the user's opponents in combat, if any. Piety also gives a higher base bonus to Attack and Defence. However, a maxed-out Turmoil (that is, Turmoil when active against an opponent with level 99 in Attack/Strength/Defence) provides stronger bonuses in all three skills than Piety, when used against adequately powerful opponents. Additionally, Turmoil's drain rate (10 point per 2 seconds) is one-third slower than Piety's (10 point per 1.5 seconds).

Trivia

 * It is a misconception that Turmoil can boost up to 29%/32%/29%. This is true for a player who has level 99 in Attack, Strength, and Defence. However, due to the way Turmoil's boost is calculated, the percentages can be higher than this if used by a player who has a lower level in Attack, Strength, or Defence. Theoretically, a player with 1 Attack/Strength/Defence will receive a 1415%/923%/1415% boost from Turmoil when fighting a player with level 99 Attack/Strength/Defence; however, this would still only give 13 levels to Attack and Defence and 8 levels to Strength.
 * Upon the release of the Ancient Curses, some players experienced a glitch that caused the maximum Defence bonus from Turmoil to be +31% instead of +29%.
 * Additionally, the Game Guide incorrectly stated that Turmoil cannot be active alongside a deflection curse, Wrath, or Soul Split. This has since been corrected.
 * Turmoil is one of the few prayers to have an animation upon activation.
 * Switching from Ancient Curses to normal prayers on the White Knights' Castle altar, while using Turmoil, is an elite Falador task.
 * The only known NPCs to use Turmoil in combat are Nex, the leader of Zaros's forces in the God Wars Dungeon, and Kal'Ger the Warmonger, a Dungeoneering boss.
 * According to the ancient hymnal, Turmoil's verbal incantation is "Vim inimici mihi bono inclina." (Turn the power of my enemy to my benefit.)