Thor's Hammer Fortnite Trick Nullifies Some Fall Damage

Youtuber SypherPK has discovered an exploit with Thor's Hammer ability in Fortnite that makes you invulnerable to fall damage.
Recently, SypherPK revealed that the newest Marvel hero coming to Fortnite has already leaked. Now, after the introduction of Mythic Abilities in Thursday's patch, he's already discovered a presumably-unintended exploit.
Mjolnir is one of the Mythic Abilities that can be found near Quinjets in the battle royale. Its Hammer Strike ability will rain down some AoE damage. However, it appears that while in the process of casting the ability, players will not receive fall damage.
SypherPK unintentionally discovers this exploit in the video above. He holds the ability down while jumping from a bridge and realizes that he was protected from damage as he floated to the ground.
Here are the steps to pulling it off:
• Find Thor's Hammer and equip it.
• Begin casting the ability so that the blue target appears and your character begins to float.
• Hold it while you descend from a height and you shouldn't take any damage when you land.
This doesn't, however, appear to work at extreme heights. You can safely use it to avoid fall damage from shorter heights, but beware that it might not work if you're too high up.