Boss Encounter 4 - lvl 5 to 10

2x Chimera Large monstrosity , chaotic evil
Armor Class 14 (Natural Armor) Hit Points (12d10 + 48) Speed 30 ft., fly 60 ft.
STR 19 (+4) DEX 11 (+0) CON 19 (+4) INT 3 (-4) WIS 14 (+2) CHA 10 (+0)
Skills Perception +8 Senses Darkvision 60 ft., Passive Perception 18 Languages Understands Draconic but can't speak it Challenge 6 (2,300 XP) Proficiency Bonus +3
Actions Multiattack. The chimera makes three attacks: one with its bite, one with its horns, and one with its claws. When its fire breath is available, it can use the breath in place of its bite or horns.
Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: (2d6 + 4) piercing damage.
Horns. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: (1d12 + 4) bludgeoning damage.
Claws. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: (2d6 + 4) slashing damage.
Fire Breath (Recharge 5–6). The dragon head exhales fire in a 15-­-foot cone. Each creature in that area must make a DC 15 Dexterity saving throw, taking (7d8) fire damage on a failed save, or half as much damage on a successful one.
2x Manticore Large monstrosity , lawful evil Armor Class 14 (Natural Armor) Hit Points (8d10 + 24) Speed 30 ft., fly 50 ft. STR 17 (+3) DEX 16 (+3) CON 17 (+3) INT 7 (-2) WIS 12 (+1) CHA 8 (-1) Senses Darkvision 60 ft., Passive Perception 11 Languages Common Challenge 3 (700 XP) Proficiency Bonus +2 Tail Spike Regrowth. The manticore has twenty-four tail spikes. Used spikes regrow when the manticore finishes a long rest. Actions 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, range 100/200 ft., one target. Hit: (1d8 + 3) piercing damage.