Abducting Talons:  If the Wyvern flies at least 10 feet straight toward a target and hits with 2 Slash attacks, the target must make a DC 19 DEX save.  Failure:  Large or smaller creatures are grappled (escape DC19) and the Wyvern cannot attack other creatures with its talons while grappling.  The Wyvern doesn't provoke opportunity attacks when it flies out of an enemy's reach this way.

Multiattack. The wyvern makes two attacks: one with its bite and one with its stinger. While flying, it can make two talon attacks and one stinger or bite attack.

Object Drop:  While flying the Wyvern can release a medium or large object from it's talons, targeting a point below it in a 10ft radius.  Each creature in that radius must make a DC 19 DEX save.  Failure: The creature takes 3 (1d6) bludgeoning damage per 10ft the Wyvern is above the ground (maximum 8d6) and is knocked prone.

Bite. Melee Weapon Attack: +11 to hit, reach 10 ft., one creature.

• Gnash.  Hit: 17 (2d10 + 6) piercing damage.
• Rip and Tear.  Hit: 15 (2d8 + 6) piercing damage.  Large or smaller creatures are crippled (movement speed reduced by 10ft until receiving magical healing or a successful DC 10 medicine check w/ a healers kit).
• Whip Away.  Hit:  11 (1d10 + 6) piercing damage.  Large or smaller creatures are thrown up to 15ft away in a direction of the Wyvern's choice and must succeed on a DC19 DEX save.  Failure:  lands prone.

Talons. Melee Weapon Attack: +7 to hit, reach 5 ft., one target.

• Slash. Hit: 15 (2d8 + 6) slashing damage.
• Rend.  Hit:  13 (2d6+6) slashing damage.  Large or smaller creatures make a DC19 CON save.  Failure:  creature is lacerated (takes 2 slashing damage at teh start of each of its turn for 5 rounds until receiving magical healing or a DC10 medicine check with a healer's kit, this effect stacks the timer resets per instance of lacerated.
• Topple.  Hit:  10 (1d8+6) slashing damage.  Large or smaller creatures must make a DC19 STR save.  Failure:  Knocked prone.

Stinger. Melee Weapon Attack: +11 to hit, reach 10 ft., one creature.

• Venom Sting.  Hit: 20 (4d6 + 6) piercing damage. The target also takes 24 (7d6) poison damage.  If the creature is not resistant/immune to poison damage it must make a DC 18 CON save.  Failure:  The creature dies as the poison burns through its bloodstream, disintegrating veins and arteries on its way to the heart.

Venom Drop (Recharge 5-6).  While flying the wyvern can secrete its thick tar=like venom from its stinger, coating a small area in a 30ft long , 10ft wide line.  Each creature in that line must make a DC 18 DEX save.  Failure:  Creature takes 21 (6d6) poison damage, and is coated in venom for the next 10 minutes.  While coated this way it has disadvantage on perception checks, DEX saves, and ATK rolls.  If the creature takes s/p/b damage while coated, it takes 14 (4d6) poison damage due to the poison entering its bloodstream from the wound.  Clearing the Venom:  The venom can be wiped away with an action, the creature can submerge itself in water, or clear it with a prestidigitation cantrip.