Resistance Mark Lv. 1
Obtained as a reward for fighting against the Giants in the Giant's Cave alongside with Kamael. Collect 40 of these and go to Kekropus to get Mark of Resistance Lv. 2.
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.