You can create other cards by fusing Left Arm of the Forbidden One with another card. The following section show you wich card to fuse and what will you obtain.
Left Arm of the Forbidden One is used to obtain another card through the use of PocketStation's Comunication Fusion option. Send this card with the rest (3-4 in total) to get the specified card.
Drops S-POW / A-POW