# Bisko — thrall (US)

Updated: 2026-09-20T19:37:49.442Z
Faction: Alliance
HTML version: https://www.missingmounts.com/us/thrall/bisko

- Dailies with missing mounts: 3

## Reins of the Grand Black War Mammoth (weekly)

- Mount: [Grand Black War Mammoth](https://www.missingmounts.com/mounts/286) — drops [Reins of the Grand Black War Mammoth](https://www.wowhead.com/item=43959)
- Dungeon: Vault of Archavon
- Location: Wintergrasp
- NPC: All 4 bosses
- Drop chance: 1%
- Description: Only accessible when your faction controls Wintergrasp. Each boss has a separate weekly lockout, allowing you four chances per week per character if your faction maintains contro

## Solar Spirehawk (weekly)

- Mount: [Solar Spirehawk](https://www.missingmounts.com/mounts/634) — drops [Solar Spirehawk](https://www.wowhead.com/item=116771)
- Dungeon: World Boss
- Location: Spires of Arak
- NPC: Rukhmar
- Drop chance: 1%
- Description: Rukhmar spawns in the southern part of the zone and can be engaged by any number of players. Since this is a world boss, you can only attempt to loot it once per week per character.

## Aerial Unit R-21/X (daily)

- Mount: [Aerial Unit R-21/X](https://www.missingmounts.com/mounts/1227) — drops [Aerial Unit R-21/X](https://www.wowhead.com/item=168830)
- Dungeon: Operation: Mechagon
- Location: Mechagon Island
- NPC: King Mechagon
- Drop chance: 1%
- Description: Defeat King Mechagon, the final boss in the Operation: Mechagon dungeon on Mythic difficulty.