---
name: "Promise of Loyalty"
mana_cost: "{4}{W}"
cmc: 5
type_line: "Sorcery"
colors: ["W"]
color_identity: ["W"]
keywords: []
set: "MKC"
set_name: "Murders at Karlov Manor Commander"
collector_number: "79"
rarity: "rare"
artist: "Sara Winters"
oracle_id: "e1d294e8-67b1-4a4a-86b8-f98f28a327d9"
canonical_url: "https://avascry.com/printing/promise-of-loyalty-mkc"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "not_legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "not_legal"
---

# Promise of Loyalty
- **Mana Cost:** `{4}{W}` (CMC: 5)
- **Type:** Sorcery

## Oracle Text
Each player puts a vow counter on a creature they control and sacrifices the rest. Each of those creatures can't attack you or planeswalkers you control for as long as it has a vow counter on it.

> *« C'est nous contre le reste du monde. Pour toujours. »*

## Top 4096-Dim Neural Synergies
1. [Vow of Duty](/printing/vow-of-duty-cma.md) — Enchantment — Aura
2. [Onakke Oathkeeper](/printing/onakke-oathkeeper-cmm.md) — Creature — Ogre Spirit
3. [Peacekeeper](/printing/peacekeeper-wth.md) — Creature — Human
4. [Pledge of Loyalty](/printing/pledge-of-loyalty-plst.md) — Enchantment — Aura
5. [Propaganda](/printing/propaganda-plst.md) — Enchantment
6. [Ghostly Prison](/printing/ghostly-prison-onc.md) — Enchantment

## Printing Details
- **Set:** Murders at Karlov Manor Commander (MKC) #79
- **Rarity:** Rare
- **Artist:** Sara Winters
- **Total Printings:** 61 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`