Earth Elemental Myrmidon Medium elemental, neutral 7 2,900 xp

Armor class 18 (Plate)
Hit points 127 (17d8+51)
Speed 30 ft

STR 18 (+4)
DEX 10 (0)
CON 17 (+3)
INT 8 (-1)
WIS 10 (0)
CHA 10 (0)

Damage Resistances: bludgeoning, piercing, and slashing from nonmagical attacks

Damage Immunities: poison

Condition Immunities: paralyzed, petrified, poisoned, prone

Senses: darkvision 60 ft., passive Perception 10

Languages: Terran, one language of its creator's choice

Challenge: 7 (2,900 xp)

Magic Weapons. The myrmidon’s weapon attacks are magical.

Actions

Multiattack The myrmidon makes two maul attacks.

Maul Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) bludgeoning damage.

Thunderous Strike (Recharge 6) The myrmidon makes one maul attack. On a hit, the target takes an extra 16 (3d10) thunder damage, and the target must succeed on a DC 14 Strength saving throw or be knocked prone.