Vaelthrix, the Rime Wyrm
An old white dragon roosting above Rimefall (level 53). Breathes lanes of frost, raises ice pillars that shield him and bursts the ground around him.
The highland clans say Vaelthrix was a fire-wyrm once, and that he flew north to sleep when the vents froze. He slept too long. He woke white, and hungry, and very, very cold.
Tips
- Frost Breath is a cone in front of him: fight from his flank.
- Break the ice pillars: while one stands he shrugs off most of your damage.
- When the ground around him frosts over, get out, then dodge the shards that follow.
- Drop rates are per kill for each hero nearby. Magic find raises the rarity of gear, not these chances.
Drop Table
| Drop | Qty | Rate | Nightmare | From level | Table | Note |
|---|---|---|---|---|---|---|
 Wyrmwing Mantle | 1 | 1/50 2% | 1/35 2.9% | Vaelthrix, the Rime Wyrm | ||
 Rimebreath | 1 | 1/50 2% | 1/35 2.9% | Vaelthrix, the Rime Wyrm | ||
 Wyrmling Clutch | 1 | 1/50 2% | 1/35 2.9% | Vaelthrix, the Rime Wyrm | ||
 Crystal Spider | 1 | 16.7% | 16.7% | Pet | once per hero | |
 Ashgate Scroll | 1 | 1/67 1.5% | 1/67 1.5% | Anything | ||
 Identify Scroll | 1 | 1/40 2.5% | 1/40 2.5% | Anything | ||
 Health Potion | 1 | 1/33 3% | 1/33 3% | Anything | ||
 Warden Key Fragment | 1 | 12% | 12% | 6 | Anything | |
 Pall Rune | 1 | 28% | 28% | Vaelthrix, the Rime Wyrm | ||
 Hollowing Awl | 1 | 30% | 30% | 10 | Anything | |
 Ashen Shard | 1–2 | 60% | 60% | 8 | Anything | |
 Chaos Ember | 1–2 | 60% | 60% | 12 | Anything | |
| Identify Scroll | 2 | 100% | 100% | Boss hoard | ||
 Ashen Bones | 2–4 | 100% | 100% | Anything | ||
| Rare item for its level | 1–2 | 100% | 100% | Boss hoard | ||
| Gold | 2–6 × level × 20 | 100% | 100% | Anything | ||
 Ashfall Rune | 1 | — | 1/13 8% | Boss hoard | ||
 Emberstone | 1 | — | 60% | Boss hoard |
Mechanics
| Name | When | Text |
|---|---|---|
| Frost Breath | every ~7s | Five lanes of frost fan out towards his target, then freeze solid. Get to the side of him. |
| Ice Pillars | at 75%, 40% life | At 75% and 40% life three pillars of ice rise around the roost. While a ward stands the boss shrugs off most of your damage: break them first. |
| Hoarfrost | every ~11s | The ground around him frosts over, then bursts, and shards of ice fly out in every direction. Get away from him, then dodge the shards. |
| Frenzy | below 30% life | Below 30% life he breathes far more often. |
