TheWoWDBThe Bastion of Twilight
Theralion and Valiona Guide
Theralion and Valiona in The Bastion of Twilight, quoted from the Adventure Guide. Database holds the raw abilities and the full loot table.
30-second TL;DR
Adventure Guide says
- Stages named in the Adventure Guide: Theralion, Grounded Abilities, Airborne Abilities, Valiona, Grounded Abilities, Airborne Abilities, Twilight Realm.
Encounter phases
Adventure Guide says
- Theralion When the encounter begins, Theralion immediately takes to the air, while Valiona engages the attackers on the ground. The twin dragons share a single health pool, and each alternates between being airborne and fighting on the ground.
- Grounded Abilities Theralion uses the following abilities while on the ground.
- Airborne Abilities Theralion uses the following abilities while in the air.
- Valiona When the encounter begins, Theralion immediately takes to the air, while Valiona engages the attackers on the ground. The twin dragons share a single health pool, and each alternate between being airborne and fighting on the ground.
- Grounded Abilities Valiona uses the following abilities while on the ground.
- Airborne Abilities Valiona uses the following abilities while in the air.
- Twilight Realm Being struck by Theralion's Dazzling Destruction or Valiona's Deep Breath pulls players into the Twilight Realm. In this alternate plane of existence, spheres of volatile twilight energy float around and detonate if touched. Collapsing portals appear randomly throughout the area, and players may use a portal to return to the material plane. Each portal disappates after a time. In Heroic Difficulty Shifting Reality also pulls players into the Twilight Realm.
Interrupts and dispels
Adventure Guide says
Dispels named in the journal
- Blackout: When Blackout expires or a player dispels the effect, the dark energy explodes in a massive torrent.
Normal, Heroic, and Mythic
Adventure Guide says
Only sentences the Adventure Guide itself marks as a difficulty change. We do not invent extra Heroic or Mythic strategy.
- On Heroic Difficulty the Twilight Realm is populated by the mysterious Twilight Sentries.
Boss abilities
| Ability | Adventure Guide | Notes |
|---|---|---|
| Engulfing Magic | However, each time the affected player deals damage or healing, Engulfing Magic triggers a twilight explosion. In a 25 player raid, Theralion twists the magical energies of three enemy spellcasters. | |
| Fabulous Flames | Theralion launches a burst of twilight energy at the location of a random enemy. | |
| Twilight Shift | Theralion periodically applies Twilight Shift to his current target. This effect stacks. When Theralion applies a fifth stack to the same target, he casts Shifting Reality on the target. | |
| Twilight Blast | While hovering overhead, Theralion continually launches bolts of twilight flame at the locations of random players. | |
| Dazzling Destruction | As he prepares to land, Theralion mesmerizes his foes with swirling patterns of energy on the ground. If a player is already in the Twilight Realm when struck by Dazzling Destruction, that player dies. | |
| Blackout | When Blackout expires or a player dispels the effect, the dark energy explodes in a massive torrent. | dispel |
| Devouring Flames | Valiona unleashes a prolonged breath of Twilight flame in the direction of a random player. for 5 sec. The damage diminishes on targets within the breath the farther away from Valiona they are located. | |
| Twilight Meteorite | Valiona sets her sights upon a random player and prepares to unleash a powerful Twilight Meteorite on them. | |
| Deep Breath | As she prepares to land, Valiona takes a deep breath and strafes from one end of the chamber to the other, engulfing a third of the room in Twilight Flames. If the player is already in the Twilight Realm when struck by Deep Breath, that player dies. | |
| Rift Blast | ||
| Twilight Zone | ||
| Unstable Twilight | Coming into contact with one of the floating orbs of twilight energy within the Twilight Realm causes it to violently explode. |
Loot
Every name is a TheWoWDB item page. Hover the row for the first-party tooltip.
Blade of the Witching HourBlade of the Witching Hour
Daybreaker HelmDaybreaker Helm
Dragonheart PiercerDragonheart Piercer
Drape of the TwinsDrape of the Twins
Fang of TwilightFang of Twilight
Helm of Eldritch AuthorityHelm of Eldritch Authority
Necklace of StrifeNecklace of Strife
Ring of RivalryRing of Rivalry
Theralion's MirrorTheralion's Mirror
Valiona's MedallionValiona's Medallion
Vial of Stolen MemoriesVial of Stolen Memories
Waistguard of HatredWaistguard of Hatred
Odd Twilight EggMounts, toys, achievements, transmog
Only rows the journal loot table or an achievement title can prove for this encounter.
Achievements
Heroic: Ascendant Council · Heroic: Cho'gall · Heroic: Halfus Wyrmbreaker · Heroic: Sinestra · The Bastion of Twilight
Entrance and instance
The Bastion of Twilight is a raid in the Adventure Guide. See the The Bastion of Twilight database page for the raw journal, map, and loot grid. This guide does not invent coordinates or a walking path.
Related bosses
Player strategy
This page quotes the Adventure Guide. It does not add player strategy such as positioning, assignments, stack or spread calls, or cooldown timings unless that sentence is already in the journal.
Questions
What does the Adventure Guide say about Theralion and Valiona?
Stages named in the Adventure Guide: Theralion, Grounded Abilities, Airborne Abilities, Valiona, Grounded Abilities, Airborne Abilities, Twilight Realm.
What does Theralion and Valiona drop?
The Adventure Guide lists 25 drops. Each name links to its TheWoWDB item page. The full table also lives on the The Bastion of Twilight database page.
Does Theralion and Valiona change on Heroic or Mythic?
Yes. The Adventure Guide adds difficulty sentences on the abilities that change; those sentences are collected in the difficulty section. We do not invent additional Heroic or Mythic strategy.
Where does this guide's text come from?
Quoted Adventure Guide sections come from TheWoWDB's retail datamine (client build 12.1.0.69587, ingested 2026-09-01). Player strategy such as positioning, assignments, and cooldown timings is omitted unless that sentence is already in the journal.
Source and build
This page quotes the Adventure Guide. It does not add player strategy such as positioning, assignments, stack or spread calls, or cooldown timings unless that sentence is already in the journal. Quoted sections come from TheWoWDB Adventure Guide datamine (client build 12.1.0.69587, ingested 2026-09-01). Ability names link to first-party spell pages. When a newer retail build is ingested, this page updates with it.