Alpha Manticore

Tail Spike Regrowth. The manticore has thirty tail spikes. Used spikes regrow when the manticore finishes a long rest.

Spike Stinger. The alpha manticore‘s stinger loses 3 spikes for every attack made with the stinger. If all spikes are lost, stinger deals 1d6+4 bludgeoning damage with no poison. 

Multiattack. The manticore makes three attacks: one with its bite and two with its claws, three with its tail spikes, or two attacks with its stinger.

Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage.

Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) slashing damage.

Tail Spike. Ranged Weapon Attack: +4 to hit, range 100/200 ft., one target. Hit: 7 (1d8 + 1) piercing damage. Target must make a DC 13 constitution saving throw or take 6(2d6) poison damage or half as much on a success  

Spike Stinger. Melee Weapon Attack: +7 to hit, reach 5ft, one target. Hit: 14 (2d10+4) piercing damage. Target must make a DC 17 constitution saving throw or take 9(3d6) poison damage, or half as much on a success. 

Alpha Manticore has 3 Legendary actions that can be spent after a players turn. The Alpha Manticore regains all 3 actions at the start of its turn.

Leap. Costs 1 action. The Alpha Manticore leaps to an empty space within twenty-five feet without prompting opportunity attacks.

Swipe. Costs 1 action. The Alpha Manticore makes an additional claw attack.

Sling. Costs 2 actions. The Alpha Manticore fires two additional tail spikes

Sting. Costs 2 actions. The Alpha Manticore makes an addtional attack with it's spike stinger.

Wing-Frenzy. Costs 2 actions. The Alpha Manticore flaps its wings furiously. All creatures within melee distance must make a DC 13 Strength saving throw or be forced ten feet straight back and knocked prone.

Spike-Refill. Costs 3 actions. The Alpha Manticore forces six spikes growing inside its tail to sprout immediately.