Source of Earth
Medium elemental, neutral
Armor Class
17 (natural armor)
Hit Points
124 (13d8 + 65)
Speed
10 ft., fly 10 ft. (hover)
STR
11 (+0)
DEX
9 (-1)
CON
20 (+5)
INT
10 (+0)
WIS
19 (+4)
CHA
10 (+0)
Damage Resistances
bludgeoning, piercing, and slashing from nonmagical attacks
Condition Immunities
exhaustion, paralyzed, petrified, poisoned
Senses
darkvision 60 ft., passive Perception 17
Saving Throws
Str +3, Con +8
Languages
Aquan, Auran, Common, Ignan, Terran
Challenge
6 (2,300 XP)
Foundation of All the World. Allies within 60 feet of the Source cannot be moved against their will or knocked prone.
Actions
Diamondskin. As a bonus action, the Source focuses its gaze on an ally within 30 feet. Diamond crystals emerge from the target’s skin, increasing their AC by 2 for 10 minutes, after which the diamonds turn to worthless dust, restoring the target’s skin to its previous state.
Back to Earth. The Source focuses its gaze on an enemy within 30 feet. If the target’s body is made of flesh, the target must make a DC 15 Constitution saving throw. On a failed save, the creature magically begins to turn to stone and is restrained. At the end of its next turn, it must repeat the saving throw. On a success, the effect ends. On a failure, the creature is petrified until freed by the greater restoration spell or other magic.
Wall of Stone (1/Day). The Source causes a 30-foot-long wall of solid stone to thrust up through the floor. The wall has six 5-foot-long panels to it, which can be arranged however the summoner of the Source wishes, but each segment must form a line or a right angle with the previous segment. Each panel is 6 inches thick and 10 feet high. Each panel has AC 15 and 180 hit points. If reduced to 0 hit points, a panel crumbles, leaving loose scree that counts as difficult terrain. The wall lasts for 10 minutes, then turns to dust.
If the wall is summoned in a creature’s space, the creature is pushed to one side of the wall, chosen by the summoner. If a creature would be surrounded on all sides by the wall (or the wall and another solid surface), that creature can make a Dexterity saving throw. On a success, it can use its reaction to move up to its speed so that it is no longer enclosed by the wall.