Feather of Blessing
Dimensional item You can resurrect right away at the spot where you get killed if you have the Feather of Blessing. Cannot be exchanged, dropped, or destroyed. Can be stored in a private warehouse. Can be shared between characters within the account through Dimensional Merchant.
Not dropped by monsters.
Cannot be spoiled.
The chances are official (x1). On servers with x10, x100 and higher rates, drop and spoil come more often.