Noumenon Favour is a virtual currency used during the 2015 Hallowe'en event. It can be obtained by:
- Capturing Wayward Souls floating on the River Noumenon, 5 favour each.
- Siphoning Soul Devourers, 10 favour each during pass; 3 favour otherwise.
- Killing Soul Devourers, 10 favour each during pass; 3 favour otherwise.
- Turning in souls to Icthlarin, 300 favour each time.
- Fighting off the Avatar of Amascut, 400 favour each time.
- Turning in Lost spirits to Sinn Derkwill, 100 favour each.
A maximum of 50,000 Noumenon Favour can be owned at once.