Faction and hero.

Troll Skills:

Weapon:

Axe:
[N] Skill increases attack bonus
[S] Skill reduces cooldown time
[M] Skill increases damage dealt
[V] Chance to halve the opponent's defense class

Bow:
[N] Skill increases attack bonus
[S] Skill reduces cooldown time
[M] Allows firing two arrows per attack
[V] Skill increases damage dealt

Dagger:
[N] Skill increases attack bonus
[S] Allows wielding a dagger in the left hand
[M] Chance to deal triple damage
[V] Skill increases damage dealt

Mace:
[N] Skill increases attack bonus
[S] Skill increases attack bonus
[M] Chance to stun equals skill level
[V] Chance to paralyze equals skill level

Spear:
[N] Skill increases attack bonus
[S] Skill increases damage dealt
[M] Ability to wield a spear with one hand
[V] Skill increases defense class

Staff:
[N] Skill increases attack bonus
[S] Skill increases defense class
[M] Chance to stun equals skill level
[V] Skill increases damage dealt

Sword:
[N] Skill increases attack bonus
[S] Skill reduces cooldown time
[M] Allows wielding a sword in the left hand
[V] Skill increases defense class

Armor:

Leather:
[N] Skill increases defense class
[S] Cooldown penalty is removed
[M] Skill increases defense class (effect is doubled)
[V] Skill increases resistance to elemental effects (fire/earth/air/water)

Chain Mail:
[N] Skill increases defense class
[S] Cooldown penalty is reduced by half
[M] Cooldown penalty is removed[V] Only 2/3 of physical attacks are received

Miscellaneous:

Weapon Proficiency:
[N] Skill reduces cooldown time for all melee weapons
[S] Skill increases attack bonus for all melee weapons
[M] Skill increases damage dealt for all melee weapons
[V] All of the above effects are doubled

Bodybuilding:
[N] Increases the number of hit points
[S] Effect of the skill is doubled
[M] Effect of the skill is tripled
[V] Effect of the skill is quadrupled

Monster Identification:
[N] Skill allows determining the number of hit points and defense class
[S] Allows determining the type of attack and damage dealt
[M] Allows determining which spells are available to the monster
[V] Allows determining resistance levels

Learning:
[N] Skill increases the amount of experience gained
[S] Effect of the skill is doubled
[M] Effect of the skill is tripled
[V] Effect of the skill is quadrupled

Trap Disarming:
[N] Chance to disarm a trap
[S] Effect of the skill is doubled
[M] Effect of the skill is tripled
[V] 100% success

Trading:
[N] Allows bargaining
[S] Effect of the skill is doubled
[M] Effect of the skill is tripled
[V] Allows selling and buying items at their real cost

Awareness:
[N] Skill increases the chance to avoid traps and notice hidden treasures
[S] Effect of the skill is doubled
[M] Effect of the skill is tripled
[V] 100% success

Regeneration:
[N] Lost hit points are restored faster
[S] Effect of the skill is doubled
[M] Effect of the skill is tripled
[V] Effect of the skill is quadrupled

Item Repair:
[N] Ability to repair items
[S] Effect of the skill is doubled
[M] Effect of the skill is tripled
[V] 100% success

P.S. For convenience, yellow color has been replaced with orange