Soil Snake

Construct Nature. Doesn't require air food drink or sleep.

Grassland Camouflage. Has advantage on Dex (Stealth) checks made to hide in grassland terrain.

Multiattack. One Bite attack and one Tail Whip attack.

Bite. Melee Weapon Attack: +7 to hit, 10 ft., one target, 14 (2d8+5) piercing damage.

Tail Whip. Melee Weapon Attack: +7 to hit, 10 ft., one target, 16 (2d10+5) bludgeoning damage.

Charging Swallow. Partially submerges in the ground and slithers forward scooping up soil and creatures as it goes. The soil snake moves up to 30' in a straight line and can move through the space of any Med or smaller creature. The first time it enters a creature's space during this move that creature: 14 (4d6) bludgeoning damage and is buried as it is swallowed bounced through the hollow inside of the soil snake and deposited back in its space under a pile of soil (DC 14 Dex half damage and isn't buried). A buried creature is restrained and unable to breathe or stand up. A creature including the buried creature can take its action to free the buried creature by succeeding on a DC 14 Str check.

Soil Blast (Recharge 5-6). Expels soil in a 30' cone. Each creature in that area: 18 (4d8) bludgeoning damage and is knocked prone (DC 14 Dex half damage not prone).