Welcome to Librarium Online!
Sorry, not much of a first post, but I was just really curious what an Eldar Firestorm was.
A firestorm is a gravtank from Epic Armageddon which is used for anti-air defence IIRC - armed with lots of scatter lasers. I believe forgeworld also do a conversion kit for the falcon.
Forgeworld conversion from a falcon into an anti aircraft vehicle, rules are in the Forgeworld IA update 2005, you will probably need your oponents permision to use it and it is illegal in most tournements
Everything you have been told is a lie!