- Can I use Junk Arm if there aren't any trainer cards already in the Discard Pile?
- No, you cannot play Junk Arm unless there is at least one Trainer card other than Junk Arm already in the Discard Pile beforehand.
Source:
PUI Rules Team (2010-12-09), PUI Rules Team (2004-06-16)
Relevant cards
Note: All applicable cards may not be listed below.