User blog comment:Hitsuji Mamoru/Servant Creation Room 2 : Guess of the Who/@comment-31726296-20170527150525/@comment-31726296-20170527214427

Pillager's Arm is the ability to steal trophies from others. For example, being able to steal the image of Samos. But with a rank of E they would have Difficultly not getting caught.

. However, you were right about a skill being turned into a trophy.