i didnt do buffer item, skill npc or healnpc, its all from Moon++, Im just helping people who cant compile something,
Buffer Item, SkillNPC, HealNPC : (SQL FILES IN THE FOLDER)
NOTE : YOUR REVISION MUST BE EXACLY SAME WITH DLLs.
Credits :
HealNPC - Moon++
SkillNPC - Moon++
Buffer Item - Moon++ (Added 1 more cheap buff by LordJedi)
Guide : Download all and extract to YourRev/script_bin/ and execute the sql files to your world database, then restart your server...
In the game do .additem 60005 , .additem 61000 , .additem 60001 and .npc spawn 55555 then ENJOY! 
Sources :
Pictures :