Vitreous Stone Drake
Find a character at the top of the page to see whether your account has this mount, and where that character stands on what it asks for.
Look it up on WowheadHow to get it
Rare drop from Slabhide, the second boss of The Stonecore, on any difficulty. On Normal the dungeon can be reset and run again at once, so the kills are not held to one a day.
Chance 0.79% per try, so about 127 tries on average — Wowhead: 1,877 mounts in 238,367 recorded Normal loots of Slabhide (read 2026-10-10). On Heroic it has 975 in 110,566, 0.88%. The tooltip's 0.69% is every loot pooled, 2,975 in 431,491, which takes in 82,558 loots under neither heading with 123 mounts among them
Inside The Stonecore, a dungeon
Time there about 4 min a visit
Before you go
Nothing to unlock first: go there and take your chance.
Getting there
/way Deepholm 47.8 51.9 - Take the portal from Eastern Earthshrine to Deepholm
- Fly the rest of the way
- Take the portal from Western Earthshrine to Deepholm
- Fly the rest of the way
/way is for the TomTom addon. Travel times are estimates: flying at 55 yards a second in a straight
line and 30 seconds for a portal.
Notes and sources
About 127 Normal kills expected at 0.79%. Normal has no daily lockout: a 2025 Wowhead comment describes killing the second boss, taking the portal back to the entrance, resetting and going again on the same character, and another of 2025 had 65 Normal runs in a day at about 1 minute 50 seconds each. The game's cap on new instances in an hour still applies (a 2024 comment changed character on reaching it); its size was not looked up. Heroic is once a day for each character, so a Heroic kill can be added to the Normal ones (a 2025 comment).
The entrance is from the game's table; the wiki has 47, 52, on the west side of the Temple of Earth. The time on the spot is an estimate for one run to Slabhide and back out. Whether Corborus, the first boss, has to be killed to reach Slabhide was not established.
The wiki says any difficulty. Its Timewalking page lists The Stonecore in the Cataclysm pool, and a 2026 Wowhead comment reports the drake from a Timewalking run, so the weeks of Cataclysm Timewalking add a third way in. Wowhead shows no separate count for it; the 82,558 loots outside Normal and Heroic (0.15%) may be those.
Comments of 2025 report drops during Collector's Bounty, a limited-time event that raised the chance; whether one is running now was not looked up. The wiki names the Black Market as another place the reins turn up, and Wowhead lists the Reins of the Quantum Courser; neither is the route described.
Confidence in this entry: high. Looked up in 2026.
Sources