Devlin

At Clan.java
 
find LOAD_PRIVILEDGES and update it with the following line ->
 
private static final String LOAD_PRIVILEDGES = "SELECT `privs`,`rank` FROM `clan_privs` WHERE `clan_id`=?";

At the source of the project @clientpackets/EnterWorld.java

I made a skill like this back in 2014. I have only the skill handler, you have to complete it and adapt it.
 
https://pastebin.com/Hv5mc57z
 
As far I can see from the code, you have to add only 1 method in L2PcInstance (Player in newer version).
 
setWeaponRestricted

after this,
 
else if (player.isInOlympiadMode())
{
player.sendPacket(new SystemMessage(SystemMessageId.S1_CANNOT_BE_USED).addItemName(item));
return;
}
 
add
 
else if (player.getClan().getLevel() == 8 )
{
   player.sendPacket(new SystemMessage(SystemMessageId.S1_CANNOT_BE_USED).addItemName(item));
   return;
}

I think it's item's ID. It's too high number, try a lower one.

Nah dude.
 
Do it like this.
 
item.setEnchantLevel(item.getEnchantLevel() - 1);

You probably did a wipe and you forgot augmentations table.
 
1) Close the server.
2) Open navicat.
3) Right click on table "augmentation".
4) Empty table.
5) Check if problem still exists.

http://pastebin.com/MTACLPtD
 
και για grandboss μαζί

for (L2PcInstance player : getKnownList().getKnownType(L2PcInstance.class))

http://pastebin.com/xdKpMMu3
 
I guess.
 
Replace nameColor with your color.

http://pastebin.com/4eEvXMR5 Tested on aCis and works.
 

onTarget method, if npcId equals to target do return?

replace true with 0
 
also, at the first error after -3472 add ,0

The problem has been solved by me, topic locked.

Formulas.java
 
Search for calcMpRegen method.
 
For my project, exist a config for mana regeneration multiplier but the method is mpRegenMultiplier.

<!-- Archer's Will -->
    <item>
        <ingredient id="14721" count="5">
 
should be
 
<!-- Archer's Will -->
    <item>
        <ingredient id="14721" count="5"/>
 
you forgot the /

I see this quakeSystem++; 2 times.