Hello, for you that don't know i am going to tell you how to disable a spell, this thing can be used for servers that is public and stop spell bug abusing and if you want to disable a spell just go easy into navicat and select the table
You will see this:Spell_Disable
Under that you write the id of the spell you want to disable, let's say you want to disable the mage spell "Blink" then you find out the ID of the spell and write it under "spellid" and "replacement_spellid" you write "0"spellid______replacement_spellid
Good luck =)