Stormbreaker was used in the Battle of Wakanda to great effect, augmenting Thor's own lightning massively. Notably, of all the battles, it was the only weapon that severely wounded Thanos by impaling him soon after the Infinity Gauntlet was completed. However, Thor intentionally aimed for Thanos' chest, resulting in Thanos only being badly injured rather than instantly killed. This allowed Thanos to activate the Infinity Gauntlet, and eliminate fifty percent of the universe's life. Moreover, Thanos would also fully recover from the said mortal wound by the time he had arrived on the Garden to recover. As Thanos teleported away, Stormbreaker fell to the ground, the blade covered in his blood.[1][2]

Stormbreaker was later summoned to Thor's hand when he stared at Captain Marvel, testing her resolve. In addition, when the Avengers ambushed Thanos, Thor took great pride in cutting off Thanos' left arm while the Infinity Gauntlet was still attached to his hand. When Thanos announced he had destroyed the Infinity Stones, Thor cut off Thanos' head this time and fulfilling what Thanos himself told Thor should have done the first time.