---
name: "Keeper of Secrets"
mana_cost: "{5}{R}"
cmc: 6
type_line: "Creature — Demon"
colors: ["R"]
color_identity: ["R"]
keywords: ["First strike", "Haste", "Symphony of Pain"]
set: "40K"
set_name: "Warhammer 40,000 Commander"
collector_number: "78"
rarity: "rare"
artist: "Miguel Sacristan"
oracle_id: "23f86ee2-b1e3-45c2-bfd5-044919033922"
canonical_url: "https://avascry.com/printing/keeper-of-secrets-40k"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "not_legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "not_legal"
---

# Keeper of Secrets
- **Mana Cost:** `{5}{R}` (CMC: 6)
- **Type:** Creature — Demon
- **Power/Toughness:** 6/4
- **Keywords:** First strike, Haste, Symphony of Pain

## Oracle Text
First strike, haste
Symphony of Pain — Whenever you cast a spell from anywhere other than your hand, this creature deals damage equal to that spell's mana value to target opponent.

> *Olhar para um deles é desistir dos últimos vestígios de livre arbítrio.*

## Top 4096-Dim Neural Synergies
1. [Infernius Spawnington III, Esq.](/printing/infernius-spawnington-iii-esq-ulst.md) — Creature — Demon Beast Grandchild
2. [Ash Zealot](/printing/ash-zealot-pio.md) — Creature — Human Warrior
3. [Mindsparker](/printing/mindsparker-fdn.md) — Creature — Elemental
4. [Pain Distributor](/printing/pain-distributor-moc.md) — Creature — Devil Citizen
5. [Mai, Scornful Striker](/printing/mai-scornful-striker-ptla.md) — Legendary Creature — Human Noble Ally
6. [Pit Spawn](/printing/pit-spawn-exo.md) — Creature — Demon

## Printing Details
- **Set:** Warhammer 40,000 Commander (40K) #78
- **Rarity:** Rare
- **Artist:** Miguel Sacristan
- **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`