Dimensional Merchant's Gift
Special gift received from the Dimensional Merchant for the friend recommend service. When used, you can acquire occasionally such items as Fresh Milk, Blessed Scroll of Escape, Blessed Scroll of Resurrection, and weapon enhance backup stones.
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.