Multiattack

The incinis makes two magma fist attacks.

Magma Fist

Melee Weapon Attack: +9 to hit, reach 10 ft., one creature. Hit: 14 (2d8 + 5) bludgeoning damage and 9 (2d8) fire damage.

Wave of Magma (Recharge 5-6)

The incinis transforms into a wave of magma, moving up to its speed in a straight line. Each creature in the path where the incinis moves must make a DC 17 Dexterity saving throw. On a failure, a target takes 21 (6d6) fire damage and, if it is a Large or smaller creature, it is pushed ahead of the incinis and knocked prone in an unoccupied space within 5 feet of where the incinis ends its movement. On a success, a target takes half the damage and is neither pushed nor knocked prone.