Backlash

Also known as the preserver's scourge, this spell makes the ground dangerous to defilers. This spell only affects a creature with at least one point in defiler aura. Should a defiler try to tap into land that is protected by a backlash, she automatically takes 1d6 force damage. The defiler must make a Constitution save or the spell they were casting is lost. Defilers have penalty to the saving throw equal to their defiler aura points. Once it has inflicted damage, the spell is discharged and the ground returns to normal. Only one backlash can be cast on any given plot of ground.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage dealt increases by 1d6 for each spell slot above 1st.