---
name: "K-9, Mark I"
mana_cost: "{U}"
cmc: 1
type_line: "Legendary Artifact Creature — Robot Dog"
colors: ["U"]
color_identity: ["U"]
keywords: ["Negative", "Affirmative", "Doctor's companion"]
set: "WHO"
set_name: "Doctor Who"
collector_number: "953"
rarity: "rare"
artist: "Narendra Bintara Adi"
oracle_id: "413bc18b-1579-41b5-a778-3a29def52bb0"
canonical_url: "https://avascry.com/printing/k-9-mark-i-who"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "not_legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "not_legal"
---

# K-9, Mark I
- **Mana Cost:** `{U}` (CMC: 1)
- **Type:** Legendary Artifact Creature — Robot Dog
- **Power/Toughness:** 1/1
- **Keywords:** Negative, Affirmative, Doctor's companion

## Oracle Text
Negative — As long as K-9 is untapped, other legendary creatures you control have ward {1}.
Affirmative — {1}{U}, {T}: Target legendary creature can't be blocked this turn.
Doctor's companion (You can have two commanders if the other is the Doctor.)

## Top 4096-Dim Neural Synergies
1. [Watchdog](/printing/watchdog-tmp.md) — Artifact Creature — Dog
2. [Yoshimaru, Ever Faithful](/printing/yoshimaru-ever-faithful-prm.md) — Legendary Creature — Dog
3. [Lockjaw, Slobbering Teleporter](/printing/lockjaw-slobbering-teleporter-msc.md) — Legendary Creature — Inhuman Dog Hero
4. [Pack Leader](/printing/pack-leader-m21.md) — Creature — Dog
5. [Karlov Watchdog](/printing/karlov-watchdog-mkm.md) — Creature — Dog
6. [Isamaru and Yoshimaru](/printing/isamaru-and-yoshimaru-unk.md) — Legendary Creature — Dog

## Printing Details
- **Set:** Doctor Who (WHO) #953
- **Rarity:** Rare
- **Artist:** Narendra Bintara Adi
- **Total Printings:** 11 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`