Gives chance to double swing a Dagger class weapon with a chance equal to (5*SkillLV)%, and adds +1 HIT per SkillLV (that only applies in double attacks). In the case of an Assassin wielding two Dagger class weapons, it applies to the right-hand weapon only.
It also boosts the off-hand (left hand) damage of a Katar weapon by (1+2*SkillLV)% ATK.

When attacking with Dagger class weapon, there is chance of inflicting double attacks.
Skill level affects Double Attack chance and HIT bonus.

This skill also affects Left-Hand damage of Katar class weapons.

Increases Flee Rate by +3*SkillLV. This skill boosts the walking speed for Assassins by 1% per SkillLV and gives an additional +1 Flee Rate per SkillLV when you are an Assassin or Rogue.
The walking speed bonus does not add to the walking speed increase when using Cloaking.

Increases FLEE.
FLEE receives additional bonus upon reaching 2nd classes.
This skill also slightly enhances the Movement Speed of Assassin classes.

Attempts to "steal" an item from the targeted monster. Only items dropped by the monster can be stolen. A successful Steal attempt will not affect what is dropped when the monster dies.
After success, it is not possible to Steal again from the same monster. Boss, Frozen and Stone Cursed monsters cannot be robed.
The formula for stealing is: DropRatio*(DEX - MonsterDEX + 10 + 3*SkillLV + )/100 where DropRatio is the percent chance of a particular item being dropped.
If the result of the steal check is lower than the AdjustedDropRatio for an item, then it is possible that item will be stolen.

Steals an item from a specified target.
If target's DEX is higher than the caster, the success rate of stealing an item is decreased.

This skill can't be used on Boss monsters and Players.

Toggles the hide effect on the character on/off.

Hidden characters cannot move, attack or use any skill (except certain Rogue skills) and do not regenerate HP or SP.

The hide effect makes a character invisible to other players and monsters. This stops skills and spells that are targeted at you from working and anything attacking you stops (assuming that their last hit doesn't hit you and reveal you!).

Attention Concentrate, Ruwach, Detecting and Sight are all capable of revealing hidden characters. Insects, Demons and Boss monsters are able to see hidden targets.

Consumes 10 SP for casting and continually drains certain amount of SP while hiding. Toggling the hide effect off consumes no SP.

Hides under the ground to avoid enemy attack.
Detection skills can cancel Hiding status.
Demon, Insect and Boss monsters can detect character in Hiding status.

Can be canceled by using the skill again.

An attack that adds 15*SkillLV to your ATK (unmodified by Armor and VIT Def) to your normal damage. This bonus damage is always inflicted, whether your character lands a normal hit or not.
Envenom has a (10+4*SkillLV)% chance to inflict poison status on target. Poisoned targets have their DEF reduced by 25% and lose 3% of Maximum HP every 3 seconds unless that would cause HP to drop below 25% of Maximum HP.
The entire screen turns purple for the poisoned individual. Undead property and Boss monsters cannot be poisoned.

Deals Poison elemental damage to a target that has a chance of inflicting Poison status.
Target in Poison status recieves certain damage according MaxHP every second and reduced physical defense by 25%.
Envenom inflicts normal damage, but gets additional damage according skill level.

Cures poison status on target.

Removes Poison status from a targeted character.

An attack with 130% normal ATK and with a 20% chance to cause blind effect. Although it has no Cast Time or Cool Down it can't be spamed.

Kicks sand into enemy's face which will inflict 130% ATK Earth elemental physical damage and can inflict Blind on the target.

Moves you backwards 5 cells (depends on the direction you are facing).

Quickly move 5 cells backwards to position yourself safely away from threats.

Adds one Stone item to your inventory. Will not work if you are overweight (more than 50% of total weight capacity).

Picks up a Stone from the ground.
This skill fails, if the current Weight is more than 70%.

An attack that always does 50 points of damage (but does not ignore damage reduction cards) and has a 3% chance of causing the stun effect on the target. Consumes one stone per use. Useful for luring monsters link monsters away from a pack and other such sneaky thief-like tricks.

Attacks an enemy with a Stone which inflicts 50 damage that pierce enemy's defense and has a low chance of inflicting Stun or Blind statuses.

Consumes 1 Stone.