After ambushing Dr. Strange at the beginning of the Infinity Gauntlet, Doom's power is pitted once more against the Sorcerer Supreme's, this time along with Dr. Druid! But the tables turn when von Doom joins the battle... ?
Doom's Shade vs Dr. Strange, Dr. Druid, from Doctor Strange, Sorcerer Supreme #34:
One of Iron Man's old villains reconstructs Dr. Doom's Time Platform, using it to bring the Dark Phoenix to the present, where she destroys the Earth. The blast sends Stark throughout the past, close to pieces of the Time Platform which he'll need to assemble to return home. At one point, he meets up with the Johnny Storm of the past and encounters the creator of the Time Platform himself.
Doom vs Iron Man and Human Torch, from Iron Age #2:
Well sure, now that they took the Beyonder from the Ultimate Cosmic Being ever, to just a mutant inhuman, Im sure thats true. Pre Retcon Beyonder would never have lost to such a grouping of heroes, heck, replace the heroes there with Cosmic Beings of the highest order and old school Beyonder still would have beaten them.
Lol. These days Marvel keeps retconning their characters' power levels so often and so arbitrarily that there's no way to keep up with them. At the time of writing, it seems that
Mr. Sinister > Fulcrum/Tiamut
Hank Pym & Cassie > Life-Force Victor > Beyonder > Living Tribunal