Mordenkainen´s Tome of Foes
Earth Elemental Myrmidon CR: 7
Medium elemental, neutral
Armor Class: 18 (plate armor)
Hit Points: 127 (17d8 + 51) 17d8+51
Speed:
30 ft
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 Rating: 7
Earth Elemental Myrmidon by WotC
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) 2d6+4 bludgeoning damage.
Thunderous Strike (Recharge 6). The myrmidon makes one maul attack. On a hit, the target takes an extra 16 (3d10) 3d10 thunder damage, and the target must succeed on a DC 14 Strength saving throw or be knocked prone.
Elemental myrmidons are elementals conjured and bound by magic into ritually created suits of plate armor. In this form, they possess no recollection of their former existence as free elementals. They exist only to follow the commands of their creators.