Overall Impression: 9/10
Commentary: Ditko hits it out of the park in his swan song. The battle between Eternity and Dormammu looks epic and we see visually how small Doc is in the scale of such things. O'Neil turns in a much stronger script here than he did in the previous issue. Nice little bits like the bystanders when Doc steps through the amulet and the interaction between Doc and the finally revealed Clea, but still some hamfisted bits like Mordo's dialogue when he emerges from the netherrealm.
This is perhaps one of the greatest Doc epics ever, and certainly set the tone for everything that happened with the character moving forward in terms of tone, feel, and scale. Anything coming after is going to seem less by comparison, but the fact it is the first Strange without Ditko on board is going to be a double let down, but such is the life of an ongoing comic feature, and Doc is a strong enough character to survive and eventually thrive again.