Actions

Multiattack. Cerbie can make three attacks: one with each of his heads.   Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., 1 target. Hit: (1d8+3) piercing damage.   Megaroar. Ranged Weapon Attack: +3 to hit, range 25 ft., 1 target. Hit: (3d6+1) force damage.
The target must succeed a (DC 14) Dexterity saving throw or be pushed back 10 ft. and take an additional (1d4) thunder damage.   Blaze Barrage. Ranged Weapon Attack: +4 to hit, range 35 ft., up to 2 targets. Hit: (3d4+2) fire damage.