I always figured they were going to use Loki as a stand in for Dr. Doom in the MCU’s version of Infinity Gauntlet. I can totally see the MCU Loki and Iron Man doing a version of this scene:

He is NOW! I’ll never think of him as anything else!

You’re thinking of the Lunataks. Tug-Mug broke the Sword of Omens in half with his bare hands.

They are effectively walking batteries.