Not every special grade waits until the endgame to show up. Rainbow Dragon has no clan, no stolen technique, and no grudge worth naming - it’s simply a huge, scaleless serpent that shimmers every color at once and was already old and hungry long before any sorcerer went looking for trouble in its territory. First-years who survive an early trial mission gone wrong rarely forget meeting one.
Huge cursed spirit, unaligned
| Stat | Value |
|---|---|
| Armor Class | 17 |
| Hit Points | 220 (21d12 + 84) |
| Speed | 20 ft., fly 60 ft. |
| Saving Throws | Dex +8, Con +10, Wis +6 |
| Challenge | 18 |
| Cursed Energy | 26 |
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 22 (+6) | 18 (+4) | 19 (+4) | 6 (-2) | 14 (+2) | 10 (+0) |
Senses truesight 60 ft., passive Perception 12 · Languages —
Traits
Cursed Manifestation. Only creatures that can sense cursed energy can perceive or harm the dragon. It is exorcised when reduced to 0 hit points.
Reinforcement. While it has cursed energy remaining, the dragon adds +3 to its AC, saving throws, and damage rolls.
Actions
Multiattack. The dragon makes one Bite attack and one Tail Slam attack.
Bite. Melee Weapon Attack: +10 to hit, reach 15 ft., one target. Hit: 24 (3d10 + 6) piercing damage.
Tail Slam. Melee Weapon Attack: +10 to hit, reach 20 ft., one target. Hit: 20 (2d12 + 6) bludgeoning damage, and the target must succeed on a DC 18 Strength saving throw or be knocked prone.
Prismatic Breath (Recharge 5-6, 4 Cursed Energy). The dragon exhales shimmering cursed energy in a 60-foot cone. Each creature there makes a DC 18 Dexterity saving throw, taking 45 (10d8) force damage on a failure, or half as much on a success.