Troll

The Troll is a loathsome creature innately able to regenerate from most wounds.
==Gameplay ==
Trolls are brute force fighting creatures that seek to kill their enemies in close quarters combat. 
A troll has a superior movement rate compared to a humanoid creature (that isn't enhanced in some way with a movement modifier).
When they are brought near to death (a minimum of 1 hit point) they fall unconscious to the ground. They can be killed permanently in that state, but only by acid or fire damage, and if this is not done quickly, they recover health and consciousness. 
A troll is also susceptible to additional forms of death outside of fire and acid damage. For example, they can be slain through petrification or the slay effect from various spells and items, such as Slay Living, Deathblow, Finger of Death, and many others. The Crom Faeyr war hammer will instantly kill any creature with a troll race or class assigned.
==Troll Types==
The type of troll described here is the most common. For other types, see Trolls, Disambiguation.
==Locations==
===Baldur's Gate II: Shadows of Amn===
*De'Arnise Keep
*Druid Grove
==Quests==
*Heeding the Spirit of the Grove
*The de'Arnise Keep has been Invaded
==Notes ==
*In trolls are generally classified as Monsters of neither gender, while the enhanced game changes this to male Giant humanoids.
*For the stats included if a player untilizes the Cloak of the Sewers Troll Form, see that article page.
==Mod content==
The Sword Coast Stratagems mod and the "Tactical Challenges for BG2" component can offer the following regarding Troll creatures:
Rebalanced Troll Regeneration
By default, the trolls in Infinity Engine games regenerate slowly, but upon being reduced to 1 hp go into a coma - in the coma they can be killed by fire or acid but are immune to all other effects. By fairly common consent, this doesn't work so well. 
Troll regeneration is too slow to make much difference in combat, and the iconic role of fire or acid is reduced to a coup de grace. (It doesn't help that the actual implementation is a bit glitchy, with trolls often taking a while to enter their coma phase.)
This component (inspired by the Pathfinder RPG) makes two modifications to trolls. Firstly, their base regeneration rate is doubled, and while regenerating they cannot die (they still go into a coma at 1 hp). But secondly, any time they take fire or acid damage their regeneration is halted for one round. So as long as you keep fire or acid damage active on a troll, they can be harmed and killed normally - but if you stop doing so, they will rapidly recover.
(There is actually a third modification: for technical reasons, fire and acid do one extra point of damage to trolls.)
==External Links==
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