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Ostinato

Medium Aberration · Chaotic Neutral · CR 4

  • Aberration
  • Medium
  • Tier 1
  • Neutral

CR 4 medium aberration, chaotic neutral — that's Ostinato. Native to any, ruins, and underground. Sourced from Tome of Beasts 1.

Stat Block

Challenge Rating
4
Type
Aberration
Size
Medium
Alignment
Chaotic Neutral
Speed
0, fly 50
Habitats
Any, Ruins, Underground
Sources
Tome of Beasts 1

Ecology

Ostinato is an outsider to the natural order, often associated with the Far Realm or other planes whose laws differ from this world. It is most often found in ruins regions. It is medium-sized, which shapes how it hunts, hides, or fights.

Behaviour

Ostinato is cold and inhuman in its goals; it does not think the way mortals think. Its Chaotic Neutral alignment shapes how it engages with the world — predictable in tendency, even when unpredictable in detail. It is intelligent enough to plan, scheme, or remember.

Origin

Ostinato is introduced in Kobold Press's Tome of Beasts 1 (2016). Aberrations leak from the Far Realm or older creations that predate the gods, where the laws of reality differ. Within a campaign, its existence anchors a region with the kind of weight only an old, named species carries.

CR 4 monstersAll AberrationsAnyRuinsUnderground

Related Monsters

Frequently Asked Questions about Ostinato

What is the challenge rating of Ostinato?
Ostinato is rated CR 4. The rating matches tier-1 encounter math.
What type of creature is Ostinato?
By creature type, Ostinato is a aberration, medium size, chaotic neutral alignment.
Where does Ostinato live?
The bestiary places Ostinato in Any, Ruins, Underground.
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QR code linking to Ostinato — https://www.doungim.com/dnd/monsters/ostinato Scannable QR code encoding the URL https://www.doungim.com/dnd/monsters/ostinato. Point a phone camera at this code to open the Ostinato page on your mobile device — useful at the table when a DM's laptop or a printed sheet is showing the page.
Scannable QR code encoding the URL https://www.doungim.com/dnd/monsters/ostinato. Point a phone camera at this code to open the Ostinato page on your mobile device — useful at the table when a DM's laptop or a printed sheet is showing the page.