---
name: "Koilos Roc"
mana_cost: "{4}{U}"
cmc: 5
type_line: "Creature — Bird"
colors: ["U"]
color_identity: ["U"]
keywords: ["Flying", "Flash"]
set: "BRO"
set_name: "The Brothers' War"
collector_number: "55"
rarity: "common"
artist: "Antonio José Manzanedo"
oracle_id: "0956c0f5-ff1d-43d5-88de-4c2d603cf798"
canonical_url: "https://avascry.com/printing/koilos-roc-bro"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "legal"
  pioneer: "legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "legal"
  penny: "legal"
---

# Koilos Roc
- **Mana Cost:** `{4}{U}` (CMC: 5)
- **Type:** Creature — Bird
- **Power/Toughness:** 3/3
- **Keywords:** Flying, Flash

## Oracle Text
Flash
Flying
When this creature enters, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

## Top 4096-Dim Neural Synergies
1. [Spirit](/printing/spirit-tmm2.md) — Token Creature — Spirit
2. [Siren Lookout](/printing/siren-lookout-xln.md) — Creature — Siren Pirate
3. [Obyra's Attendants // Desperate Parry](/printing/obyras-attendants-desperate-parry-woe.md) — Creature — Faerie Wizard // Instant — Adventure
4. [Battlewing Mystic](/printing/battlewing-mystic-dmu.md) — Creature — Bird Wizard
5. [Birds of Paradise](/printing/birds-of-paradise-sld.md) — Creature — Bird
6. [Bird](/printing/bird-totj.md) — Token Creature — Bird

## Printing Details
- **Set:** The Brothers' War (BRO) #55
- **Rarity:** Common
- **Artist:** Antonio José Manzanedo
- **Total Printings:** 8 across all historical editions

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