The Avengers (2018) #66 (Online Order Only)

AVENGERS ASSEMBLE: PART 8 - THE FINAL BATTLE BEGINS!

In the dark heart of all that is, the battle to save the entire Multiverse is raging, featuring a cast of Avengers that staggers the imagination. Surely no foe from any universe would dare stand against such a force? Mephisto dares, as the full extent of his plan finally comes into shocking focus.