The Avengers Vol. 1 (1963-1996) #182

Plot

Quicksilver and the Scarlet Witch have mysteriously collapsed inside Avengers Mansion. Dr. Donald Blake tries to diagnose their condition, but he doesn't realize that Wanda's and Pietro's souls have been transferred into miniature dolls! How did Django Maximoff do that? Fortunately, Jocasta picks up a trail of mystic energy that leads to a rundown rooming house in the Bowery. And inside a small guest room, the Avengers wage a bizarre battle against apparitions of the Toad, Nighthawk, and Princess Python! Can the Avengers free Wanda and Pietro from the clutches of the nivashi stone? (mycomicshop.com)