function FindKnownSpellByTypeAndLevel (string sType, int nSubtype, int nLevel=-1, object oCreature=OBJECT_SELF) Returns spell id of known spell of given type and level or -1 * sType: type of a spell * nSubtype: SPELL_SUBTYPE_ * nLevel: level of a spell (-1 if doesn't matter) * Return type: int * Include file: nwscriptdefn