EDH Optimizer
K-9, Mark I
Legendary Artifact Creature — Robot Dog · U
Color identity: Blue
K-9, Mark I is blue: its deck can only run cards of that color plus colorless ones.
Rules 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.)
Reference price of the card: €1.48
Average lands in decks for K-9, Mark I: 33
LegendsHistoricArtifactsClonesCluesTokensAggroAttack Triggers
Build your K-9, Mark I deck step by step, with in-depth analysis and AI optimization of your list.
🛠️ Build a deck for K-9, Mark I 📥 Analyze my deck🎲 How the average K-9, Mark I deck starts over 4,000 games
The list people actually play per EDHREC (the 99 most-included cards, with its average land count), simulated with the EDH Optimizer engine: hands, mulligans, lands, curve and commander. It does not model opponents; it measures whether the plan gets going.
Deck health of the average list: B (68/100)
- Consistency72
- Speed53
- Interaction100
- Resilience81
- Closing49
See the cards of the average deck · 99 cards, 33 lands (10 nonbasic, 23 Island)
Sol Ring · Ioreth of the Healing House · Sapphire Medallion · Aetherize · Brainstorm · Counterspell · Iymrith, Desert Doom · Pongify · An Offer You Can't Refuse · Bident of Thassa · High Tide · The Reality Chip · Arcane Signet · Combat Research · Ponder · Rapid Hybridization · Thassa, God of the Sea · Arwen's Gift · Callaphe, Beloved of the Sea · Eluge, the Shoreless Sea · Frantic Search · Nezahal, Primal Tide · Relic of Legends · Grazilaxx, Illithid Scholar · Heroes' Podium · Preordain · Reality Shift · Negate · Patriar's Seal · Swiftfoot Boots · Teferi, Mage of Zhalfir · Aqueous Form · Arcane Denial · Blackblade Reforged · Champion's Helm · Malcolm, Alluring Scoundrel · Midnight Clock · Crystal Skull, Isu Spyglass · Excalibur, Sword of Eden · Imprisoned in the Moon · Solemn Simulacrum · Teferi's Ageless Insight · Thought Vessel · Unctus, Grand Metatect · Wizard Class · The Blue Spirit · Desynchronization · Kira, Great Glass-Spinner · Sun Quan, Lord of Wu · Archmage's Charm · Atemsis, All-Seeing · Baral, Chief of Compliance · Cyclonic Rift · Opt · Propaganda · Adric, Mathematical Genius · Consider · Esior, Wardwing Familiar · Kairi, the Swirling Sky · Piper Wright, Publick Reporter · Sakashima the Impostor · Serum Visions · Wayfarer's Bauble · Birthday Escape · Jin-Gitaxias, Progress Tyrant · Lightning Greaves · Rivendell · Mystic Sanctuary · Reliquary Tower · Castle Vantress · Lonely Sandbar · Minamo, School at Water's Edge · Otawara, Soaring City · Myriad Landscape · War Room · Nykthos, Shrine to Nyx
🃏 Recommended cards for K-9, Mark I
The highest-synergy cards in decks for K-9, Mark I, with their inclusion rate.
| Card | Inclusion | Synergy |
|---|---|---|
| Ioreth of the Healing House | 67% | +64% |
| Iymrith, Desert Doom | 53% | +53% |
| Rivendell | 63% | +52% |
| Combat Research | 44% | +42% |
| Arwen's Gift | 42% | +42% |
| Callaphe, Beloved of the Sea | 42% | +41% |
| Thassa, God of the Sea | 44% | +41% |
| Relic of Legends | 42% | +40% |
| Heroes' Podium | 40% | +39% |
| Grazilaxx, Illithid Scholar | 40% | +38% |
| The Reality Chip | 49% | +37% |
| Bident of Thassa | 49% | +36% |
| Patriar's Seal | 37% | +35% |
| Nezahal, Primal Tide | 42% | +35% |
| Teferi, Mage of Zhalfir | 37% | +34% |
| Eluge, the Shoreless Sea | 42% | +34% |
| Champion's Helm | 35% | +33% |
| The Blue Spirit | 32% | +31% |
| Excalibur, Sword of Eden | 33% | +31% |
| Blackblade Reforged | 35% | +30% |
| Malcolm, Alluring Scoundrel | 35% | +30% |
| Sun Quan, Lord of Wu | 30% | +30% |
| Aqueous Form | 35% | +29% |
| Kira, Great Glass-Spinner | 30% | +28% |
💰 The best cards for your K-9, Mark I deck, by budget
Three tiers based on the maximum price PER CARD you are willing to pay. Paste your list and hit Optimize: you pick that cap and the AI only suggests swaps that fit under it.
Tier 1 · Budget up to €2/card
The most value for almost nothing. Coming from a precon? Start here.
- Ioreth of the Healing House
- Iymrith, Desert Doom
- Rivendell
- Combat Research
- Arwen's Gift
- Callaphe, Beloved of the Sea
Tier 2 · Balanced up to €10/card
The real step up: pieces that are no longer cheap but still sensible.
- Thassa, God of the Sea
- Patriar's Seal
- Nezahal, Primal Tide
- Eluge, the Shoreless Sea
- The Blue Spirit
- Malcolm, Alluring Scoundrel
Tier 3 · No cap no cap
The cards your price cap was hiding from you.
- Excalibur, Sword of Eden
- Sakashima the Impostor
- Minamo, School at Water's Edge
- Mithril Coat
- Mox Amber
Reference prices (cheapest English printing). They change daily.
♾️ Known combos with K-9, Mark I
- Hullbreaker Horror + Sol Ring → Infinite colorless mana, Infinite storm count
- Hullbreaker Horror + Mana Vault → Infinite colorless mana, Infinite storm count
- Hullbreaker Horror + Mox Amber → Infinite creature ETB, Infinite creature LTB, Infinite colored mana, Infinite storm count
- Marvin, Murderous Mimic + Ioreth of the Healing House → Infinite untap of legendary creatures you control, Infinite mana legendary creatures you control can produce
- Ioreth of the Healing House + Kelpie Guide → Infinite untap of legendary creatures you control, Infinite mana legendary creatures you control can produce
- Cut Your Losses + Fraying Sanity → Infinite self-mill, Infinite mill for target opponent
Other commanders
Frequently asked questions
What is K-9, Mark I's color identity?
K-9, Mark I is blue: its deck can only run cards of that color plus colorless ones. Color identity comes from every mana symbol on the card, including those in the rules text, not just the casting cost.
What turn does K-9, Mark I come down, and how often does the deck get stuck?
In the average K-9, Mark I deck (the 99 most-included cards per EDHREC, with 33 lands), simulated 4,000 times, the commander comes down on turn 1.0 on average and is on the battlefield before turn 7 in 100 % of games. It misses at least one land drop in the first six turns 27 % of the time and floods 13 %. Deck health: B (68/100).
How many lands should a K-9, Mark I deck run?
Real K-9, Mark I decks run 33 lands on average. That is a starting point, not a rule: a lower curve can shave one or two, big-mana builds want more. The EDH Optimizer simulator tells you, over 10,000 games, how often you get mana screwed or flooded with your exact count.
What are the best cards for K-9, Mark I?
The three highest-synergy cards are Ioreth of the Healing House, Iymrith, Desert Doom, Rivendell. This page lists the top 24 with their real inclusion rate in K-9, Mark I decks.
What combos does K-9, Mark I have?
K-9, Mark I has 6 known combos. The most popular one is Hullbreaker Horror + Sol Ring. Note that two-card combos raise your deck's bracket, so it is worth knowing which ones you are running before you sit down.
How much does a K-9, Mark I deck cost?
You can start cheap: Ioreth of the Healing House, Iymrith, Desert Doom, Rivendell are under €2 each. The "Level up" section on this page splits the best cards into three price caps PER CARD (up to €2, up to €10 and no cap), and the optimizer only suggests swaps that fit the cap you pick.