Amazing Adventures, Vol. 3 #13 (Cvr A) (1980)

The Return of the Blob
From X-Men #7: The X-Men graduate! Professor X appoints Scott the team's leader and shows him Cerebro, a mutant detecting machine! Elsewhere, Magneto attempts to recruit The Blob, and in the scuffle the Blob regains his memory. Scott realizes this thanks to Cerebro. There is a pitched battle at the carnival where Blob works. When Magneto attempts to destroy the X-Men with missiles, Blob inadvertently shields them. Ultimately, he decides he has lived as a carny and will die was one; he wants nothing to do with the mutant vs. mutant fights. Scarlet Witch is becoming fed up with Magneto's casual attitude towards violence.
Release Date: 1980