You will need.
homeward spell or homeward bones.
the shortcut in lost Izalith open.
Avelyn l +4 and as many lightning bolts for it as you can afford you will need around 100 per go.
Goto the respawning titanite demon in lost Izalith let rip from a distance kill the demon collect 2 demon titanites warp back to the daughter of chaos go back to the demon via the short cut rinse repeat takes about 5 mins for a guaranteed 2 demon titanite everytime without risk of being killed this is very helpful beyond ng+.