---
name: "Sphere of Reason"
mana_cost: "{3}{W}"
cmc: 4
type_line: "Enchantment"
colors: ["W"]
color_identity: ["W"]
keywords: []
set: "ODY"
set_name: "Odyssey"
collector_number: "51"
rarity: "uncommon"
artist: "Christopher Moeller"
oracle_id: "de85c961-622d-4d70-8cd7-f722c1ac5ed1"
canonical_url: "https://avascry.com/printing/sphere-of-reason-ody"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "not_legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "not_legal"
---

# Sphere of Reason
- **Mana Cost:** `{3}{W}` (CMC: 4)
- **Type:** Enchantment

## Oracle Text
If a blue source would deal damage to you, prevent 2 of that damage.

> *La razón revela el engaño.*

## Top 4096-Dim Neural Synergies
1. [Circle of Protection: Blue](/printing/circle-of-protection-blue-tmp.md) — Enchantment
2. [Sphere of Truth](/printing/sphere-of-truth-ody.md) — Enchantment
3. [Sphere of Law](/printing/sphere-of-law-ody.md) — Enchantment
4. [Protective Sphere](/printing/protective-sphere-inv.md) — Enchantment
5. [Sphere of Duty](/printing/sphere-of-duty-ody.md) — Enchantment
6. [Sphere of Grace](/printing/sphere-of-grace-ody.md) — Enchantment

## Printing Details
- **Set:** Odyssey (ODY) #51
- **Rarity:** Uncommon
- **Artist:** Christopher Moeller
- **Total Printings:** 9 across all historical editions

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