Multiattack

The accursed defiler makes two slam attacks.

Slam

Melee Weapon Attack: +6 to hit, reach 5 ft., one creature. Hit: 11 (2d6 + 4) bludgeoning damage. If a creature is hit by this attack twice in the same round (from the same or different accursed defilers), the target must make a DC 13 Constitution saving throw or gain one level of exhaustion.

Sandslash (Recharge 5-6)

As an action, the accursed defiler intensifies the vortex of sand that surrounds it. All creatures within 10 feet of the accursed defiler take 21 (6d6) slashing damage, or half damage with a successful DC 14 Dexterity saving throw.