Spoiler warning: Plot or ending details follow.

"Rumor has it there's a bridle that enhances a horse's skill and a saddle that can summon your horse right to you. Does this supposed ancient horse gear really exist? Apparently Highland Stable has a copy of Super Rumor Mill EX, which details some rumors about this rare horse gear."
— Adventure Log
Ancient Bridle and Saddle set (Breath of the Wild)

Promotional Artwork of the White Horse equipped with the Ancient Horse Gear

EX Ancient Horse Rumors is a side quest from The Legend of Zelda: Breath of the Wild. It is unlocked upon installation of the DLC Pack "The Champions' Ballad". It requests Link to find and read the Super Rumor Mill V3. The quest guides Link toward the "Ancient Horse Gear" which are a rare Bridle and Saddle made with ancient Sheikah technology. Unlike other horse gear this ancient horse gear grants special effects when equipped instead of being purely cosmetic. The two EX Treasure Chests containing the Ancient Bridle and Saddle, are respectively buried on Satori Mountain and behind Malanya Spring.

Spoiler warning: Spoilers end here.

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