Monster Horn

Monster Horns are recurring items in the Legend of Zelda series. They can be collected in a variety of ways, most commonly from defeating certain enemies.

The Legend of Zelda: Skyward Sword
Link can bring Monster Horns to the Scrap Shop at the Bazaar in order to upgrade his equipment. They are dropped by Bokoblin leaders, who use the horns to summon other Bokoblins; Link can also use the Whip to pull the horn out of the Bokoblin's hands or belt. If Link can pull the horn out away from the Bokoblin before it can be blown, then he can prevent it from calling reinforcements.

Monster Horns are used for multiple item enhancements. They are needed for both stages of upgrade to the Small Quiver, and for upgrading the Divine Shield into the Goddess Shield. They can also be sold to Rupin for 30 Rupees each on certain nights.

The Legend of Zelda: A Link Between Worlds
The witch at the Witch's House will brew Link a Bottle of Yellow Potion if he brings 10 Monster Horns to her.