Sorry i'm not releasing this in long long time, because i bought VIP to see the lending dupe glitch.. but it was: "4. play with the item" omg lol.
Btw i tested this more, i can attack only NPCs, but when i die i don't lose my stuff and i spawn at the clan wars portals.
If i go to BH or jump over wilderness ditch or go downstairs or upstairs, it forgets that clan wars.