Imprintable. Being young it is capable of being imprinted to a master, becoming a valuable companion

Learned Abilities. After imprinting it's master may, beyond basic trainings teach it more complex commands once per level up to a maximum of 4 abilities.

Up High. Once imprinted the master may give the wyvern a command word for it to fly high among the clouds in order to not cause problems within cities and towns only to come down at it's master's call.

Growing. Being a growing little monster it will get increasingly large over 4d10 days it will grow from a small to a large creature. At the middle of this time reaching medium. After growing to full size it will be able to be ridden, and will grow to adulthood after another 1d10 days.

Natural Abilities

Multiattack. The wyvern makes two attacks: one with its bite and one with its stinger. While flying, it can use its claws in place of one other attack.

Bite. Melee Weapon Attack: +7 to hit, reach 10 ft., one creature. Hit: 7 (1d6 + 4) piercing damage. Once reaching adulthood growing to 11 (2d6+4).

Claws. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 8 (1d8 + 4) slashing damage. Once reaching adulthood growing to 13 (2d8+4).

Stinger. Melee Weapon Attack: +7 to hit, reach 10 ft., one creature. Hit: 7 (1d6 + 4) piercing damage. Once reaching adulthood growing to 11 (2d6+4). The target must make a DC 15 Constitution saving throw, taking 24 (7d6) poison damage on a failed save, or half as much damage on a successful one.

Learned Abilities- only one Learned ability may be used per turn.

Divebomb. While flying, the wyvern dives down at a target making a claw attack and attempting to tackle the target. On hit: +7 to hit, dealing 14 (3d6 +4) slashing damage. The target must make a DC 15 Strength saving throw or be knocked prone.

Pounce. Using it's turn the Wyvern hides holding it's action until a creatures comes within range pouncing on the creature making a melee attack. +7 to hit, on hit dealing 20 (4d6+4) peircing damage.

Spray. The Wyvern turns releasing a line of its thick, black, foul smelling, acidic venom. Any Creature within the line must make a DC 15 dexterity saving throw or take 18 (4d6) acid damage. The Line persists for 1 minute and any creature that crosses the line during so must make a DC 16 constitution save or spend their whole turn wretching and vomiting.

Lift off. The wyvern makes a melee attack, +7 to hit, On hit it does 1d6 Piercing damage as it sinks it's claws into the target lifting it into the air. For a medium or smaller creature using its full movement, while a large or huge creature halving its speed. once going as high as it can go it drops them dealing falling damage and ending it's turn.