---
name: "Nemesis of Reason"
mana_cost: "{3}{U}{B}"
cmc: 5
type_line: "Creature — Leviathan Horror"
colors: ["B", "U"]
color_identity: ["B", "U"]
keywords: ["Mill"]
set: "CLB"
set_name: "Commander Legends: Battle for Baldur's Gate"
collector_number: "850"
rarity: "rare"
artist: "Mark Tedin"
oracle_id: "b1d70845-869b-45f7-b4bf-1549bac51d58"
canonical_url: "https://avascry.com/printing/nemesis-of-reason-clb"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "legal"
---

# Nemesis of Reason
- **Mana Cost:** `{3}{U}{B}` (CMC: 5)
- **Type:** Creature — Leviathan Horror
- **Power/Toughness:** 3/7
- **Keywords:** Mill

## Oracle Text
Whenever this creature attacks, defending player mills ten cards.

> *Words describing it fail. Pages relating it shrivel. Tales recounting it end.*

## Top 4096-Dim Neural Synergies
1. [Sewer Nemesis](/printing/sewer-nemesis-cm2.md) — Creature — Horror
2. [Towering-Wave Mystic](/printing/towering-wave-mystic-jmp.md) — Creature — Merfolk Wizard
3. [Devourer of Memory](/printing/devourer-of-memory-thb.md) — Creature — Nightmare
4. [Nashi, Searcher in the Dark](/printing/nashi-searcher-in-the-dark-dsk.md) — Legendary Creature — Rat Ninja Wizard
5. [Crosstown Courier](/printing/crosstown-courier-rtr.md) — Creature — Vedalken
6. [Cephalid Aristocrat](/printing/cephalid-aristocrat-tor.md) — Creature — Octopus Noble

## Printing Details
- **Set:** Commander Legends: Battle for Baldur's Gate (CLB) #850
- **Rarity:** Rare
- **Artist:** Mark Tedin
- **Total Printings:** 21 across all historical editions

## Format Legalities
Commander: `legal` | Standard: `not_legal` | Modern: `legal` | Pioneer: `not_legal` | Legacy: `legal` | Vintage: `legal` | Pauper: `not_legal` | Penny: `legal`