сase SA_SPELLBREAKER:
        {
            int sp;
            if(tsc && tsc->data[SC_MAGICROD].timer != -1) {
                sp = skill_get_sp(skillid,skilllv);
                sp = sp * tsc->data[SC_MAGICROD].val2 / 100;
                if(sp < 1) sp = 1;
                status_heal(bl,0,sp,2);
                clif_skill_nodamage(bl,bl,SA_MAGICROD,tsc->data[SC_MAGICROD].val1,1);
                status_percent_damage(bl, src, 0, -20); //20% max SP damage.
            } else {
                struct unit_data *ud = unit_bl2ud(bl);
                int bl_skillid=0,bl_skilllv=0,hp = 0;
                if (!ud || ud->skilltimer == -1) break; //Nothing to cancel.
                bl_skillid = ud->skillid;
                bl_skilllv = ud->skilllv;
                if (tstatus->mode & MD_BOSS)
                {    //Only 10% success chance against bosses. [Skotlex]
                    if (rand()%100 < 90)
                    {
                        if (sd) clif_skill_fail(sd,skillid,0,0);
                        break;
                    }
                } else if (!dstsd || map_flag_vs(bl->m)) //HP damage only on pvp-maps when against players.
                    hp = tstatus->max_hp/50; //Recover 2% HP [Skotlex]
                
                clif_skill_nodamage(src,bl,skillid,skilllv,1);
                unit_skillcastcancel(bl,0);
                sp = skill_get_sp(bl_skillid,bl_skilllv);
                status_zap(bl, hp, sp);

                if (hp && skilllv >= 5)
                    hp>>=1;    //Recover half damaged HP at level 5 [Skotlex]
                else
                    hp = 0;
                
                if (sp) //Recover some of the SP used
                    sp = sp*(25*(skilllv-1))/100;

                if(hp || sp)
                    status_heal(src, hp, sp, 2);
            }
        }
        break;

HP damage only on pvp-maps when against players.