This is a list of the Rebuild server's removed skills and the changed basic attacks.
NOTE: This is not complete yet, I'll keep updating it as I find more info, you can contribute too.

Guardian

List of removed active skills:

Shield Bash
Learnable at level 11
Up to 16 damage to enemies. It consumes all the focus you have. Damage increases according to the used focus amount.
If the core skill is [Sunbeam] or [Protector], it inflicts additional damage in proportion to the physical armor.

Pull (This was used to grief people)
Learnable at level 23
Drag a party member within a 15-meter radius to the Guardian's location. During the next 10 seconds, party members receive 20% less damage.

Stand together
Learnable at level 26
Concentrate on defense for 10 seconds to absorb physical damage. In addition, party members located behind the Guardian have a 95% reduction in damage from physical attacks. If the duration is exhausted, or the damage exceeds a certain level, defensive concentration is canceled. Movement speed is reduced by 25% during Defense Concentration, immune to crowd control effects.

List of removed core skills:

Strength of Steel
Learnable at level 15
If Shield Counterattack is hit by a critical strike, gain 1 additional Tier.

Morale Boost
Learnable at level 29
Upon successful block, the cooldown of [Haste] and [Discharge] is reduced by 2 seconds.

_______________________________________________________________________________

Paladin

List of removed active skills:

Origin
Learnable at level 14
Restores 20% of max mana over 7 sec.
If the Core skill is [Priest], mana regeneration increases by 30%.

Archangel's Hug
Learnable at level 16
Shield defense probability and magic defense chance increases by 50% for 10 seconds.


List of removed core skills:

Temple's Will
Learnable at level 9
When mana drops below 50%, mana regeneration increases. The mana regeneration rate increases with the current mana.

Protection of Grace
Learnable at level 27
When the shield is cleared, it automatically applies [Healing Grace] to the target.
_______________________________________________________________________________

Assassin

List of removed active skills:

Shadow Switch
Learnable at level 23
Change the position of enemies and enemies. During casting damage is reduced by 50% and immune to crowd control effects. It does not apply to targets immune to attitude control effects.

Can not be used during stealth.


List of removed core skills:

Careful throw
Learnable at level 7
With [Dagger Throw], you have a 50% chance to cast a token of death to your target.

Winner
Learnable at level 15
Attacking stunned enemies increases damage by 5%.


_______________________________________________________________________________

Mage

List of removed active skills:

Magical Shot
Available at level 1
It deals 25 damage to enemies and increases the duration of [Elemental Armor] by 1 second.
[Power Absorb] Recovers 5% of max mana when hit.

Ice Arrow
Available at level 10
Deals 18 damage to enemies and reduces movement speed by 20% and magic armor by 30% for 2.5 seconds.

Chilling
Available at level 14
Damage enemies for 8 seconds and reduce movement speed by 10%. When the duration of the last damage is over, it freezes for 3 seconds.


Reclusion
Available at level 15
Reduces the mage's threat by 30% over 5 seconds.

Ignition
Available at level 15
Deals 6 damage to enemies. If [Burn] is applied to the target, it is transferred to the surrounding 6m targets. It also resets the duration of [Image] that was hung on the target.

Blast
Available at level 16
Deals 5 damage to enemies within 5m radius.

Lightning Bolt
Available at level 18
Deals 18 damage to enemies. If the skill hits, the cooldown of [Thunderstrike] skill is reduced by 2 seconds.

Lightning Explosion
Available at level 25
Inflicts 5 damage to enemies within a 4m radius.

Sleep
Available at level 26
Makes the enemy sleep for 30 seconds. During this time, the target's health regains its speed quickly. When it gets attacked, the skill will be cancelled.

If the target is a player, the duration is 10 seconds.

Mana Shield
Available at level 30
Creates a shield that consumes mana to absorb damage. Pressing the skill once again disables it.
Current mana must be at least 10% of max mana to activate.

List of removed core skills:


Reclusion - Switch
Learnable at level 13
[Reclusion] skill is swapped with [Distortion].

Sleep - Extension
Learnable at level 15
If [Sleep] skill is charged up to 3x times, casting time is reduced by 50%.

_______________________________________________________________________________

Berserker

Soon.


Source: link