Tough Scales. The wyvern's tough hide and thick scales make it Resistant to Piercing and Slashing damage from Non-Magical weapons.

Blindspot. The wyvern has trouble seeing enemies behind it. Attacks from behind are at ADV.

Draconic Heritage. Wyverns follow the same colorations as the mighty dragons. Red, White, Blue, Green, Black, Gold, Silver, Copper, Brass, and Bronze. As such, they come with a variety of elemental abilities. is Resistant to whichever elemental damage type correlates with it's draconic coloration, as well has having ADV on Saving Throws against their coloration's elemental effects.

Multiattack. The wyvern can make two attacks, either Gnash or Talon Gore, but it must be flying or hovering to make a Talon Gore attack.

Gnash. Melee Weapon Attack: +7 to hit, 15ft reach, 8 (1d6+5) Piercing.

Talon Gore. Melee Weapon Attack: +6 to hit, 8 (1d8+4) Slashing.

Wing Attack. Area Attack: 10ft radius centered on the wyvern. DC 15 STR or Knocked "Prone."

Dragon's Breath (Recharge 7-8). Area Attack: 30ft cone, DC 14 DEX (Fire or Acid), CON (Cold, Lightning, Poison, Sleep, Slow, or Paralyzing), or STR (Weakening). 22 (5d8) damage or half on successful save.

Winged Hop. The wyvern can leap 15ft in any direction, provided it was standing prior.

Flyby Scratch. The wyvern can swipe its talons at a creature as it flies past, so long as the creature is within range of the Talon Gore attack.

Elemental Retaliation. After a creature attacks the wyvern, regardless of a Hit or Miss, the wyvern may unleash a burst of elemental energy, dealing 13 (3d8) damage or half on a successful save.