Traits
Illumination
As a Bonus Action, the drake can produce dim light in a 15 ft radius, or bright light in a 15 ft radius and dim light for an additional 15 ft radius. The drake can end this effect as a Bonus Action.
Prickly Pines
If a creature successfully hits the drake with a melee attack, the creature takes 4 (1d8) piercing damage.
Legendary Resistance (3/Day, or 4/Day in Lair)
If the drake fails a saving throw, it can choose to succeed instead.
Spellcasting
Spellcasting
The drake casts one of the following spells, requiring no Material components and using Intelligence as the spellcasting ability (spell save DC 18, +10 to hit with spell attacks):
Color Spray, Detect Magic, Faerie Fire
Actions
Multiattack
The drake makes three Rend attacks. It can replace one attack with a use of (A) Incandescent Breath or (B) Spellcasting to cast Colour Spray.
Rend
Melee Attack Roll: +9, reach 10 ft. Hit: 13 (2d8 + 4) Slashing damage plus 7 (2d6) Radiant damage.
Incandescent Breath (Recharge 5–6)
Dexterity Saving Throw: DC 19, each creature in a 90 ft long, 5 ft wide Line. Failure: 55 (10d10) Radiant damage. Success: Half damage.
Legendary Actions
Bright Tail Lash
Strength Saving Throw: DC 17, a creature the drake can see within 15 ft. Failure: 10 (3d6) Radiant damage, and the target is knocked Prone.
Pounce
The drake moves up to half its Speed, and it makes one Rend attack.
Twinkling Lights
The drake uses Spellcasting to cast Faerie Fire.