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The Dragon Dex

How to Get a Black Dragon in Threshing Day: What Works

Black dragons choose almost no one — none have been born for a century. Canon rarity, unverified player methods, and what actually works in the game.

10/7/2026 Last updated: 10/7/2026 5 min read

FAQ

How do you get a black dragon on Dragonkind?
No confirmed method exists — there is no official answer key. The widely shared battery-level method, entering the Threshing Valley with your phone at 76–90% charge, is explicitly labeled unofficial and player-reported by the fan sites that track it.
What is the rarest dragon in Fourth Wing?
Black. Canon holds that no black dragon has been born for about a century, and black dragons are described as the most intelligent, the most dangerous, and the most discerning of all — they choose almost no one.
What dragon did Violet bond in Fourth Wing?
Violet Sorrengail is the series' famous double bond: Tairn, a black Morningstartail, and Andarna, a golden feathertail. Tairn is the mate of Sgaeyl, Xaden Riorson's blue dragon.
Does your phone battery level actually affect which dragon you get?
Players report that entering the Valley at 76–90% battery seems to help, but this is unverified folklore, not a confirmed mechanic. The game has no official answer key, and even repeating the same route does not guarantee the same dragon.

Black dragons are the jackpot of the Dragonkind game — and the color the community has generated the most unverified theories about. This page keeps the layers honest: what Fourth Wing canon actually establishes about blacks (genuinely rare, genuinely selective), what players report inside the game on dragonkind.com (a lot, none of it confirmed), and what that means for your attempts.

How to Get a Black Dragon in Threshing Day

The direct answer: you cannot force it — and that is canon, not a dodge. The core law of Threshing in Fourth Wing is that you don’t pick the dragon, the dragon picks you. Black dragons sit at the extreme end of that law:

  • No black dragon has been born for about a century — the rarest den by a wide margin.
  • Fan-compiled lore describes blacks as the most intelligent and most dangerous of dragons, and “the most discerning of all… they choose almost no one.”

So a black bond is not a reward for a correct input sequence; it is the game’s rarest outcome of a choice system that has no published answer key.

The battery method, honestly described

The single most-shared black dragon tip is this: enter the Threshing Valley with your device battery between 76% and 90%, and a black is supposedly more likely to choose you. Before you schedule your day around a charging schedule, know exactly what this is:

  1. The fan sites that track it label it themselves as unofficial — “player-reported, not confirmed.”
  2. No official source has acknowledged battery level as a mechanic.
  3. It sits on top of a system where repeating the same route does not guarantee the same dragon, which makes any single-input theory hard to verify even by experiment.

What you can actually control

Your honest levers: play at all (bonds require entering the Valley), accept that burn endings are real, and use the community-reported retry rhythm — players track the wait after a burn at roughly four hours, though no official cooldown number exists. Blues are the other color players widely report as rare; see the blue dragon guide.

Black Dragon Traits and Canon Lore

What fan-compiled lore and the books establish about the black den:

  • Bloodline: Dubhmadinn.
  • Rarity: None born for around a century — which makes every living black dragon a walking anomaly.
  • Intellect and danger: Described as the most intelligent and most dangerous of dragons. The selection behavior follows: the most discerning den, choosing almost no one.
  • Mate bonds: The series’ central dragon pairing crosses color lines — Tairn (black) is mated to Sgaeyl (blue). Fan lore holds that mated pairs weaken when separated for more than three days.

The black profile is the inverse of the red dragon — where reds test your nerve openly, blacks are described as simply watching and deciding.

Riders and Famous Black Dragons

The named black pairings in fan-compiled lists:

Dragon Rider Tail type
Tairn Violet Sorrengail Morningstartail
Codagh General Melgren Swordtail

Tairn is the most famous dragon in the series and half of Violet Sorrengail’s unprecedented double bond — she is also bonded to Andarna, a golden feathertail (feathertails, note, are not a seventh den: all dragons are born as small gold feathertails, and Andarna bonded Violet in that adolescent stage). Codagh, bonded to General Melgren, shows the other face of the black den: overwhelming power in the service of a formidable rider. The mechanics of these bonds are covered in how dragon bonding works.

Black Dragons in the Dragonkind Game

What is actually known about blacks inside the game:

  • Pool size: Community tracking counts six colors and five tail types (Morningstartail, Daggertail, Swordtail, Clubtail, Scorpiontail) — 30 possible dragons. The count is Reddit-megathread-sourced, not official.
  • Black names on result cards: Lasairith is the one black name circulating. The fan site that lists it labels its name pool as “unverified public player submissions.”
  • Hottest target: Black is the game’s most searched-for bond — which is exactly why the unverified theories cluster around it.
  • Reality check: With roughly one in ten players not bonding at all and no answer key, the healthiest framing is Tairn’s own standard: the most discerning dragon in the game is not something you farm.

Start with how to play the Dragonkind game if you are new, and take the which dragon would bond with you quiz — aiming for a black and being black-dragon material are, canonically, two different things.

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