Touch of Death. Once per long rest, the evil priest can cause its melee attack to magically deal an extra 10 (3d6) necrotic damage to a target on a hit.
Spellcasting. The evil priest is a 5th-level spellcaster. Its spellcasting ability is Wisdom (spell save DC 13, +5 to hit with spell attacks). The evil priest has the following cleric spells prepared:
Cantrips (at will): light, chill touch, thaumaturgy
1st level (4 slots): false life*, inflict wounds, ray of sickness
2nd level (3 slots): blindness/deafness, ray of enfeeblement
3rd level (2 slots): animate dead, vampiric touch
*the evil priest casts this before combat
Mace. Melee Weapon Attack: +2 to hit, reach 5 ft., one target. Hit: 3 (1d6) bludgeoning damage.
Tail Spike Regrowth. The manticore has twenty-four tail spikes. Used spikes regrow when the manticore finishes a long rest.
Multiattack. The manticore makes three attacks: one with its bite and two with its claws or three with its tail spikes.
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: (1d8 + 3) piercing damage.
Claw. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: (1d6 + 3) slashing damage.
Tail Spike. Ranged Weapon Attack: +5 to hit, reach 100/200 ft., one target. Hit: (1d8 + 3) piercing damage.