Agreed, as Green K need to be toned down from its current effecting on him, or else make it impossible to be made artifical means, unless you have resources of a wayne/luthor, and magic should hurt him, but not be able to dispatch him right away!

My take on magic would be like if normal weapons/lightning hit Wolverine, as they would cut/harm him, but that his healing factor and toughness makes him recover quick;y!