Blargian Snagglebeast

Size Matters. The Blargian Snagglebeast is a huge monstrosity, it is imposing, heavy, ferocious, and impractical besides! Facing down this creature will require a DC Wisdom (Survival) Check of 15 to avoid being afraid of it (unless you're playing a Gobaxi, in which case roll with Advantage)

Multiattack. The Blargian Snagglebeast is able to attack up to 3 times, in a mixture of it's melee and ranged attacks.

Slam. Fist: +4 to hit, reach 10 ft., 1 target. Hit: 20 (2d10 + 5) [Bludgeoning] damage. The Blargian Snagglebeast will grab the nearest target to it, lifting them off the ground and then slamming them down with relative ease if the creature is medium or smaller.

Munch. Grapple: +5 to hit, reach 10 ft, 1 target. Hit: 15 (2d10+4) [Acid] Damage per start of round. DC 10 strength save per round to try and escape the creature (players may still take actions inside the creature to fight back but must do so with disadvantage)

Earthquake! Ground Slam Attack: +10 to hit, range 20/100 ft., 1-8 target. Hit: 40 (3d20 + 5) [Force + Bludgeoning] damage. The Blargian Snagglebeast is able to leap into the air and slam it's entire weight upon the ground with tremendous force generating a powerful shockwave that will send boulders flying and rip open fissures in the ground. Players must make a DC: 14 dex save to stay on their feet or be knocked prone. On a Successful save the player will take half damage. 

Rolling Crusher. As a bonus action the Blargian Snagglebeast can roll into a ball and roll forward 50 ft in a straight line, any target within range will take 10 bludgeoning damage and be knocked prone for 1 turn.