One-Hit Obliterator

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Location and Uses
The One-Hit Obliterator is an unbreakable BotW: that can instantly defeat enemies in a single hit. However, it also renders its user vulnerable to single strikes as well. The One-Hit Obliterator can only be used twice at any given time. When its power is depleted, it will stop glowing for a few seconds to recharge. During this time, its attack power is reduced to 1 and it will not recharge while it is swung.

While the One-Hit Obliterator is in Link's inventory, he cannot switch to another melee Weapon, nor can he regain health. Any health regained through the use of Materials or Food will quickly disappear after Link leaves the inventory screen. The One-Hit Obliterator can safely strike an opponent's Shield without losing its charge. While at full charge, the One-Hit Obliterator can fell Trees in one hit, whereas its uncharged state requires several more hits.

The One-Hit Obliterator is found inside the Shrine of Resurrection after Princess Zelda instructs Link to return the Sheikah Slate to the terminal it was found in. After doing so, the One-Hit Obliterator will appear opposite the terminal inside the chamber. Once Link grabs hold of the One-Hit Obliterator, his Life Gauge will reduce to a mere quarter of a Heart. Upon regaining his composure, the Sheikah Monk, Monk Maz Koshia, calls out to him. Monk Maz Koshia warns Link that while undergoing the Divine Beast Tamer's Trial, he must steel himself with dedication, as its volatile properties render its use highly dangerous. Monk Maz Koshia then directs Link to his task of clearing four marked locations on the Great Plateau, where groups of enemies must be cleared. Monk Maz Koshia also warns Link that if he leaves the Great Plateau at any time before the Trial is complete, the One-Hit Obliterator will leave him and return to its pedestal in the Shrine of Resurrection.

After Link completes Etsu Korima Shrine, Rohta Chigah Shrine, Ruvo Korbah Shrine, and Yowaka Ita Shrine, the One-Hit Obliterator will split into four glowing orbs and scatter to different areas of Hyrule. The One-Hit Obliterator then returns to its pedestal in the Shrine of Resurrection. However, it can no longer be taken from its pedestal and having fulfilled its duty, rests peacefully.

Trivia
The tassles on the One-Hit Obliterator resemble that of a Gohei