Pupitar (5e Creature)
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Medium elemental, any alignment
Damage Resistances bludgeoning, piercing, and slashing from nonmagical attacks
Earth Glide. The pupitar can burrow through nonmagical, unworked earth and stone. While doing so, the pupitar doesn't disturb the material it moves through.
Guts. The pupitar has advantage on saving throws against being charmed or frightened, and while charmed or frightened, it has advantage on attack rolls.
Sand Veil. While in sandy terrain, the pupitar has advantage on Dexterity (Stealth) checks, and can take the Hide action as a bonus action.
Shed Skin. The pupitar has advantage on saving throws to end effects currently active on itself.
Thrash. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) bludgeoning damage.