"From the look of it... That must be this region's apex predator." A Flying Wyvern that rules the Windward Plains as its apex predator. It has adapted to the lightning that accompanies the Sandtide, with most sightings having occurred during the storm. Its ability to discharge electricity in powerful attacks pose a threat to even the most experienced hunters.
When a Rey Dau's wing or tail touches the ground while charged, it causes a reaction that produces a mantle of fulgurite. Not only does this widen the appendage's attack range, but it also increases the monster's charging capacity—so make a point of breaking these parts. Their heads may also be vulnerable after a discharge attack. Hunters are advised to bring thunder- resistant armor and water-based weaponry.
The flying wyvern that reigns supreme over the Windward Plains' ecosystem. It is able to store, amplify, and discharge the Sandtide's lightning.
The flying wyvern that reigns supreme over the Windward Plains' ecosystem. It has adapted to the Sandtide—when it most frequently appears—and is able to store, amplify, and discharge the storm's heavy lightning to lethal effect. Rey Dau is highly territorial and will attack any and all intruders on sight. The fulgurite against its carapace emits a sound that puts every monster in the region on guard.
| Part | IG Extract | State | Cutting | Blunt | Shot | Fire | Water | Thunder | Ice | Dragon | Stun |
|---|
| Ailment Status | Initial Threshold | Increase | Max Threshold | Duration | Damage | Reduction (Amount/Seconds) |
|---|
| Reward Type | Part | Item | Icon | Quantity | Chance |
|---|---|---|---|---|---|
| Carving | Rey Dau Scale | 1 | 28% | ||
| Carving | Rey Dau Shell | 1 | 23% | ||
| Carving | Rey Dau Wingtalon | 1 | 18% | ||
| Carving | Rey Dau Thunderhorn | 1 | 13% | ||
| Carving | Rey Dau Tail | 1 | 11% | ||
| Carving | Rey Dau Plate | 1 | 7% | ||
| Carving (Severed Part) | Rey Dau Tail | 1 | 88% | ||
| Carving (Severed Part) | Rey Dau Plate | 1 | 12% | ||
| Broken Part Rewards | Rey Dau Thunderhorn | 1 | 100% | ||
| Broken Part Rewards | Rey Dau Wingtalon | 1 | 100% | ||
| Broken Part Rewards | Rey Dau Wingtalon | 1 | 100% | ||
| Wound Destroyed Reward | Rey Dau Scale | 1 | 50% | ||
| Wound Destroyed Reward | Rey Dau Shell | 1 | 50% | ||
| Target Rewards | Rey Dau Certificate | 1 | 8% | ||
| Target Rewards | Rey Dau Scale | 1 | 25% | ||
| Target Rewards | Rey Dau Shell | 1 | 25% | ||
| Target Rewards | Rey Dau Wingtalon | 1 | 15% | ||
| Target Rewards | Rey Dau Thunderhorn | 1 | 11% | ||
| Target Rewards | Rey Dau Tail | 1 | 11% | ||
| Target Rewards | Rey Dau Plate | 1 | 5% | ||
| Carving (Rotten Monster Carcass) | Rey Dau Scale | 1 | 60% | ||
| Carving (Rotten Monster Carcass) | Rey Dau Shell | 1 | 40% | ||
| Carving (Rotten Severed Part) | Rey Dau Scale | 1 | 60% | ||
| Carving (Rotten Severed Part) | Rey Dau Tail | 1 | 40% |
| Reward Type | Part | Item | Icon | Quantity | Chance |
|---|---|---|---|---|---|
| Carving | Rey Dau Scale+ | 1 | 30% | ||
| Carving | Rey Dau Carapace | 1 | 23% | ||
| Carving | Rey Dau Fulgurtalon | 1 | 18% | ||
| Carving | Rey Dau Bolthorn | 1 | 13% | ||
| Carving | Rey Dau Tail | 1 | 11% | ||
| Carving | Rey Dau Boltgem | 1 | 5% | ||
| Carving (Severed Part) | Rey Dau Tail | 1 | 93% | ||
| Carving (Severed Part) | Rey Dau Boltgem | 1 | 7% | ||
| Broken Part Rewards | Rey Dau Bolthorn | 1 | 100% | ||
| Broken Part Rewards | Rey Dau Fulgurtalon | 1 | 100% | ||
| Broken Part Rewards | Rey Dau Fulgurtalon | 1 | 100% | ||
| Wound Destroyed Reward | Rey Dau Scale+ | 1 | 50% | ||
| Wound Destroyed Reward | Rey Dau Carapace | 1 | 50% | ||
| Target Rewards | Rey Dau Certificate S | 1 | 8% | ||
| Target Rewards | Rey Dau Scale+ | 1 | 22% | ||
| Target Rewards | Rey Dau Carapace | 1 | 22% | ||
| Target Rewards | Rey Dau Fulgurtalon | 1 | 16% | ||
| Target Rewards | Rey Dau Bolthorn | 1 | 11% | ||
| Target Rewards | Rey Dau Tail | 1 | 11% | ||
| Target Rewards | Rey Dau Plate | 1 | 7% | ||
| Target Rewards | Rey Dau Boltgem | 1 | 3% | ||
| Investigation (Basic) | Rey Dau Scale+ | 1 | 26% | ||
| Investigation (Basic) | Rey Dau Carapace | 1 | 26% | ||
| Investigation (Basic) | Rey Dau Fulgurtalon | 1 | 16% | ||
| Investigation (Basic) | Rey Dau Bolthorn | 1 | 11% | ||
| Investigation (Basic) | Rey Dau Tail | 1 | 11% | ||
| Investigation (Basic) | Rey Dau Plate | 1 | 7% | ||
| Investigation (Basic) | Rey Dau Boltgem | 1 | 3% | ||
| Investigation (Valuable) | Rey Dau Fulgurtalon | 1 | 36% | ||
| Investigation (Valuable) | Rey Dau Bolthorn | 1 | 36% | ||
| Investigation (Valuable) | Rey Dau Plate | 1 | 21% | ||
| Investigation (Valuable) | Rey Dau Boltgem | 1 | 7% | ||
| Investigation (Guaranteed) | Rey Dau Boltgem | 1 | 100% | ||
| Tempered Wound Destroyed Reward | Wyverian Bloodstone | 1 | 70% | ||
| Tempered Wound Destroyed Reward | Wyverian Bloodstone (L) | 1 | 23% | ||
| Tempered Wound Destroyed Reward | Wyverian Bloodstone Chunk | 1 | 7% | ||
| Carving (Rotten Monster Carcass) | Rey Dau Scale+ | 1 | 40% | ||
| Carving (Rotten Monster Carcass) | Rey Dau Carapace | 1 | 30% | ||
| Carving (Rotten Monster Carcass) | Monster Hardbone | 1 | 30% | ||
| Carving (Rotten Severed Part) | Rey Dau Scale+ | 1 | 60% | ||
| Carving (Rotten Severed Part) | Rey Dau Tail | 1 | 40% |
