Grumbar

Actions

Multiattack. The elemental makes three slashing attacks by converting its arm into a diamond like-blade, each of which it can replace with one use of Bolide.   Bolide. A 4-inch diameter sphere of hard-packed earth forms in front of you, launching toward a target you can see. The sphere flies in a straight line toward the target, building speed as it soars, stopping early if it impacts against a solid surface. If the sphere strikes a creature, that creature must make a Dexterity saving throw. On a failed save, the bolide strikes the target and stops moving. When the bolide strikes something, the sphere and whatever it strikes each take 1d6 bludgeoning damage per 20 feet the bolide traveled. If the bolide travels more than 120 feet, the target has advantage on the saving throw. Unless the range is increased, the bolide crumbles after traveling 240 feet.   Lightning Storm. The elemental magically creates three bolts of lightning, each of which can strike a target the kraken can see within 120 feet of it. A target must make a DC 23 Dexterity saving throw, taking 4d10 4d10 lightning damage on a failed save, or half as much damage on a successful one.   Faultline. The earth splits, creating a ravine of jagged stones in a line originating from the elemental that is 100ft long and 15ft wide. Each creature in the line must make a Dexterity saving throw, taking 8d8 piercing damage and falling prone on a failed save, or half as much damage on a successful one. Additionally, the ground in that area becomes difficult terrain until cleared.

Legendary Actions

Can take 3 Legendary Actions, choosing from the options below. Only one legendary action can be used at a time, and only at the end of another creature's turn. Spent legendary actions are regained at the start of each turn.   Lightning Storm (Costs 2 Actions): The elemental uses Lightning Storm.   Blinding Gaze (Costs 3 Actions). The elemental targets one creature it can see within 30 feet of it with its red eyes. If the target can see it, the target must succeed on a DC 15 Constitution saving throw or be blinded until magic such as the lesser restoration spell removes the blindness.