The offender is a heavy-armour mage. This mage should have its damage nerfed to approximately half that of a robe mage. I have done my calculations.
They kill robe mages even if they have the same chanting speed in seconds.
They kill light-armour mages even if they have the same chanting speed in seconds.
Remembering that the robe/light mages have the same casting, the same increase in magic attack, and the light-armour mage has more crit rate. They are both attacking each other at the same time yet light/robe gets killed before the offenders charm gets tickled.
That is not internet speed issues (sorry Vyp, cannot agree with you on the internet speed thing, I have used tortle before the offender gets any skills off and my damage log shows this - obviously without the name of the person attacking, yet still being hit with 4/5/6/7/8k hits per time)
One more thing - the offender is widely-known for doing this where other mages of the same chanting build do not output the same damage. This statement should be classed as verbal proof that there is misdemeanors going on. If there are other people they are probably in the offenders guild (we all know which one) however its almost pointless discussing this (even though I have done so above) because the offender will just re-donate to get unbanned.
Hey if Vyp can rant about overpowered warriors, I can rant about overpowered mages

Solution?
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Every player stay away from NightStalker Village, Hell World, Heaven World, Weeping Isle and any other PVP-orientated areas. Only go into FB (dungeons) - The reason? - All the money that was used to donate for items will have been wasted from the offenders point of view. How can they kill people if there are no people to kill? They will get bored and turn off guild protection and fight their own guild members for mild-amusement. The fun of the game will be lost for them.