The MCU made a big deal about how Thor (Chris Hemsworth) was the only one worthy of lifting the Mjolnir, but things are a bit different with his new weapon, Stormbreaker. The God of Thunder went through a massive transformation in Taika Waititi's Thor: Ragnarok, all in the hope of rebranding his trilogy. However, arguably the biggest change was the destruction of his powerful hammer quite early in the film.
Mjolnir was a significant part of Thor's character arc. Much of his origin story was him trying to be worthy of lifting it. Due to his immense confidence and insufferable attitude, Odin (Anthony Hopkins) banished his son to Earth and casted a spell on his weapon of choice."Whosoever holds this hammer, if he be worthy, shall possess the power of Thor," the Allfather's terms were. At the end of the 2011 Kenneth Branagh film, Thor eventually became worthy to wield the hammer again, and has since then become attached to it most of the time until Hela (Cate Blancett) easily destroyed Mjolnir in Thor: Ragnarok. This led him to seek another weapon - the "Thanos killing kind" - which led him to Eitri in Nivadellir.
The king dwarf is a legendary blacksmith and was the same person who created both the Mjolnir and Thanos' Infinity Gauntlet. Also made from Uru metals, the enchanted axe has been Thor's weapon of choice since then, using it in both the Wakanda battle in Avengers: Infinity War and Avengers HQ fight in Endgame. Power-wise, it appears that Stormbreaker is much more powerful than Thor's old hammer. Not only was it able to slice through the power of all six Infinity Stones, it's also able to summon the bifrost. All that being said, Mjolnir had stricter rules when it comes to accessibility since everyone seems to be able to wield Stormbreaker.
Groot was able to lift Stormbreaker during the weapon's creation as he got ready to give up his arm to become its make-shift handle. That doesn't mean, however, that the teenage sentient tree is worthy. At one point, during Infinity War's Wakanda battle, Steve Rogers (Chris Evans) even got a hold of it - granted that Captain America would eventually be revealed to be worthy of lifting Mjolnir too, but it's a reveal that was clearly saved for the final battle of Avengers: Endgame. As it turns out, "Mjolnir requires worthiness, not Stormbreaker," as explained by directors Joe and Anthony Russo.
With the snatched Mjolnir from the events of Thor: The Dark World returned to its original place to prevent any branch in timeline at the end of Avengers: Endgame, it's safe to say that a version of the hammer will come back for Thor: Love and Thunder for Jane Foster (Natalie Portman) to use. Thor, on the other hand, is now only left with Stormbreaker. While there's currently no enchantment on his battle axe, it can easily be casted with a spell if ever any future MCU circumstances demand it to limit those who can wield the weapon.
- Black Widow (2020) release date: May 01, 2020
- Eternals (2020) release date: Nov 06, 2020
- Shang-Chi and the Legend of the Ten Rings (2021) release date: Feb 12, 2021
- Doctor Strange in the Multiverse of Madness (2021) release date: May 07, 2021
- Spider-Man: Homecoming 3 (2021) release date: Jul 16, 2021
- Thor: Love and Thunder (2021) release date: Nov 05, 2021
- Black Panther 2 (2022) release date: May 06, 2022