|Race||Twilight dragon (Dragonkin)|
|Location||Abyssion's Lair, Deepholm|
Abyssion is an elite twilight dragon located at Abyssion's Lair in Deepholm. He has been charged by the Twilight's Hammer clan to guard . Like all dragons, his weakness is his pride. In the upper World Pillar Fragment quest-line, Abyssion can be caught in a trap set by the player, while Stormcaller Mylra helps the player vanquish him. Abyssion's Lair has various Twilight's Hammer cultists and Twilight Dragonkin. There is also an area where there are Twilight Dragon eggs.
- Rift Barrage (2 second cast) 70 yd range — Hurls a bolt of dark magic at an enemy, inflicting Shadow damage.
- Shadow Nova (10 second cast) 40 yd range — Deals shadow damage to enemies equal to 70% of their health. 40 yard radius.
- Twilight Breath (3 second cast) Unlimited yd range — Inflicts 8775 to 9225 Shadow damage in a 25 yard cone in front of the caster.
- Twilight Shield (75 mana) — Protects the caster from all attacks and spells for 8 sec., but also increases the time between attacks by 100% during that time. Instant
- Patch 4.0.3a (2010-11-23): Added.