After slaying 666 cows, Diablo 4 player makes major breakthrough in the hunt for the secret cow level

pcgamer.com:

The Oxen Gods are finally pleased. After four months with no news, a Diablo 4 player has made a major discovery in the hunt for its supposedly non-existent secret cow level.

«Uh hey, so I just got the Musty Tome from a cow after killing about 666 of them (it was hard to count),» a user who goes by Grampajoe wrote in the Not Finding A Cow Level Discord server last night. «The cow died with a red curse effect and the tome dropped from it.»

A few minutes later, Grampajoe shared a video in which they find an item that was previously thought to be unattainable. The Musty Tome, along with the Bloody Wooden Shard and the Metallic Fragment, are references to old Diablo items, and are suspected to be involved in unlocking a secret cow level like the ones found in Diablo 2 and 3.

In July, Blizzard removed a quest from the game's files that had you use the relics to perform a cleansing ritual for the «The Oxen Gods». It was the existence of that quest that really ignited the hunt for the secret level, despite Blizzard saying that there was no secret level. The removal of the quest might've been taken to mean there really was no cow level, but in the last 24 hours, players have found all three relics off of Grampajoe's discovery and performed the ritual. Now they're trying to figure out what to do with a cellar full of cows, dead bodies, and a single stamina potion.

Here's what we know so far:

When you kill the Cow King in Diablo 2's cow level, he drops eight stamina potions as a funny nod to their milky color. The people in the Not Finding A Cow Level Discord have already tried drinking eight of them at once—among other things—to no avail.

Ideas are being thrown around by the minute, including using the potions during a throwback