Harvin

Why are you editing NPC_PETRIFYATTACK instead MG_STONECURSE?
find
case MG_STONECURSE: { if (status_has_mode(tstatus,MD_STATUSIMMUNE)) { if (sd) clif_skill_fail(sd,skill_id,USESKILL_FAIL_LEVEL,0); break; } if(status_isimmune(bl) || !tsc) break; int32 brate = 0; if (sd && sd->sc.getSCE(SC_PETROLOGY_OPTION)) brate = sd->sc.getSCE(SC_PETROLOGY_OPTION)->val3; if (sc_start2(src, bl, type, (skill_lv * 4 + 20) + brate, skill_lv, src->id, skill_get_time2(skill_id, skill_lv), skill_get_time(skill_id, skill_lv))) clif_skill_nodamage(src, bl, skill_id, skill_lv, 1); else if(sd) { clif_skill_fail(sd,skill_id,USESKILL_FAIL_LEVEL,0); // Level 6-10 doesn't consume a red gem if it fails [celest] if (skill_lv > 5) { // not to consume items map_freeblock_unlock(); return 0; } } } break; change to
case MG_STONECURSE: { if (status_has_mode(tstatus,MD_STATUSIMMUNE)) { if (sd) clif_skill_fail(sd,skill_id,USESKILL_FAIL_LEVEL,0); break; } if(status_isimmune(bl) || !tsc) break; int32 brate = 0; if (sd && sd->sc.getSCE(SC_PETROLOGY_OPTION)) brate = sd->sc.getSCE(SC_PETROLOGY_OPTION)->val3; brate += 20 + (skill_lv - 1) * 10; if (sc_start2(src, bl, type, brate, skill_lv, src->id, skill_get_time2(skill_id, skill_lv), skill_get_time(skill_id, skill_lv))) clif_skill_nodamage(src, bl, skill_id, skill_lv, 1); else if(sd) { clif_skill_fail(sd,skill_id,USESKILL_FAIL_LEVEL,0); // Level 6-10 doesn't consume a red gem if it fails [celest] if (skill_lv > 5) { // not to consume items map_freeblock_unlock(); return 0; } } } break;