OnNPCKillEvent:
if ( getmonsterinfo( killedrid, 22 ) ) {
if( getmonsterinfo( killedrid, 1) <= 74 ) getitembound 7539,1,1;
if( getmonsterinfo( killedrid, 1) > 74 && getmonsterinfo( killedrid, 1) <= 89) getitembound 7589,2,1;
if( getmonsterinfo( killedrid, 1) > 89 ) getitembound 7539,5,1;
}
end;
Not tested.