Thor was able to persuade Eitri to seek a kind of revenge against the Mad Titan, and as a result the God of Thunder left Nidavellir armed with a new weapon, Stormbreaker, one greater than any other Eitri had ever made for the Asgardians before.
It turned out that Eitri, King of the Dwarves, had been forced to make the Infinity Gauntlet for Thanos - a powerful device that could be used to harness all six Infinity Stones in conjunction. Nidavellir played a crucial role in Avengers: Infinity War. In fact, it's even referenced in two of the official tie-in comics as well.
Avengers: Infinity Warfinally introduced viewers to the dwarf homeworld of Nidavellir and, while the name may have been considered a made-up world by Drax, this Realm has actually been teased in all three of the Thor movies to date.
