Thor (1962 1st Series Previously Journey Into Mystery) #428

Excalibur has been duped into thinking that Thor is the Juggernaut (thanks, Asgardian magic), and they battle Code: Blue who is trying to protect him; Add to the mix the Wrecking Crew and an invisible Enchantress and you have the perfect recipe for a battle royal; When the Wrecking Crew is finally beaten badly enough to teleport out, the spell ends and Excalibur discovers they have been beating on Thor who is still kind enough to take them to the asteroid where the real Juggernaut is hiding; Of course, they are all promptly captured and Juggy has the last laugh (at least until next issue).