Dr. Strange loses his ability to conjure a bunch of oft-named forces–like the Spirits of Vishanti and Sattanish.
And no sooner is he de-powered, than Dormammu shows up on Earth after tricking and trapping Clea.
Wong tries to help with tea.
Since his powers are limited, Strange gets help from Hulk, Silver Surfer and Ghost Rider, a (kind of) Defenders reunion.
After this, Strange forms the Secret Defenders–but the lineup is completely different.
They beat up Dormammu.