To use: You gotta have this piece:http://www.peeron.com/inv/parts/3068bp06
Then, you deploy it to the battlefield, anywhere, and when a minifig grabs it, it can do a Heroic Feat. If it fails, the piece explodes (5" radius; 4D10 explosion) and disappears. Why? Do you really think the ▲ scores epic fails? No. It is a punishment to the bad user.
I have that piece, of course
EDIT: I just realised this was my 666th post. Hooray!