I'll apply ASAP the following Changes:
EQ limit to 15%
EQ gives retal
If victim loses more than 10% obtains an special EQ protection for 8 hours
EQ caster obtains 4 hours of protection from attacks (if he destroyed more than 10%)
Still dangerous, but not lethal
If the caster casts on multiple kindoms, will have a lot of retals over him...