---
name: "Shield of Duty and Reason"
mana_cost: "{W}"
cmc: 1
type_line: "Enchantment — Aura"
colors: ["W"]
color_identity: ["W"]
keywords: ["Enchant"]
set: "APC"
set_name: "Apocalypse"
collector_number: "16"
rarity: "common"
artist: "Anthony S. Waters"
oracle_id: "1c64ab87-1da1-4b07-a3f2-73631ae3d501"
canonical_url: "https://avascry.com/printing/shield-of-duty-and-reason-apc"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "not_legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "legal"
  penny: "not_legal"
---

# Shield of Duty and Reason
- **Mana Cost:** `{W}` (CMC: 1)
- **Type:** Enchantment — Aura
- **Keywords:** Enchant

## Oracle Text
Enchant creature
Enchanted creature has protection from green and from blue.

## Top 4096-Dim Neural Synergies
1. [Green Ward](/printing/green-ward-lea.md) — Enchantment — Aura
2. [Blue Ward](/printing/blue-ward-ced.md) — Enchantment — Aura
3. [White Ward](/printing/white-ward-30a.md) — Enchantment — Aura
4. [Spectra Ward](/printing/spectra-ward-m15.md) — Enchantment — Aura
5. [Flickering Ward](/printing/flickering-ward-soc.md) — Enchantment — Aura
6. [Floating Shield](/printing/floating-shield-tor.md) — Enchantment — Aura

## Printing Details
- **Set:** Apocalypse (APC) #16
- **Rarity:** Common
- **Artist:** Anthony S. Waters
- **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: `legal` | Penny: `not_legal`