Octon Modron in Dungeons & Dragons 5e
Planescape: Adventures in the Multiverse • Morte’s Planar Parade
Octon Modron CR: 11
STR
18 +4
DEX
14 +2
CON
17 +3
INT
17 +3
WIS
16 +3
CHA
14 +2
Perception +11
truesight 120 ft., passive Perception 21
Axiomatic Mind. The octon can’t be compelled to act in a manner contrary to its nature or its instructions.
Combat Ready. The octon has advantage on initiative checks.
Disintegration. If the octon dies, its body disintegrates into dust, leaving behind anything it was carrying.
Actions
Multiattack. The octon makes three Tentacle attacks.
Tentacle. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 14 (3d6 + 4) bludgeoning damage plus 9 (2d8) lightning damage.
Whirlwind of Tentacles (Recharge 5–6). The octon rapidly extends and spins its ring of tentacles. Each creature within 20 feet of the octon must succeed on a DC 16 Strength saving throw or be pulled up to 10 feet in a straight line toward the octon. Then, the octon makes two Tentacle attacks against each creature within 10 feet of itself.
Spellcasting. The octon casts one of the following spells, requiring no material components and using Intelligence as the spellcasting ability (spell save DC 15):
At will: Detect Magic, Dispel Magic, Mending (as an action)
1/day each: Plane Shift (self only), Protection from Evil and Good
At the head of Mechanus’s sectors are the octons, hierarch modrons that oversee daily governance. They provide data to other hierarchs, such as productivity reports to septons and diagnostic data to decatons. Octons have eight mechanical tentacles which they use to manipulate objects and defend themselves, spinning them in a bludgeoning whirlwind.
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