Protocol Knight
MOMMarch of the Machine/#74/2023Common
Colour IDMV 4
Current paper retail
Card Kingdom$0.35
Cardmarket€0.04
ManaPool$0.15
TCGplayer$0.22
Buylist (dealers pay)
Card Kingdom$0.02
MTGO (Cardhoarder)
retail$0.03 tix
Paper retail history (USD)
3 providers
Latest $0.35High $0.35Low $0.35▲ 0.0%
Market and collecting
Market overview
$0.22TCGplayer, USD, retail, nonfoil
Latest observation: 2026-11-10
7d▼ 4.3%30d▲ 4.8%90d▲ 37.5%
90d high
$0.23
90d low
$0.16
Paper printings priced
1
Currently 1st
Cheapest paper printing
$0.22
March of the Machine
- Up 4.8% over the last 30 days on TCGplayer.
- Currently 4% below its 90 day high of $0.23.
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Compare printings (1 priced)
Gameplay and rules
Creature — Human Knight
When this creature enters, tap target creature an opponent controls. Put a stun counter on that creature if you control another Knight. (If a permanent with a stun counter would become untapped, remove one from it instead.)
3 / 4
Card capabilities
Creature
Derived deterministically from card types, Oracle text and keywords. Not a strategic evaluation.
Format legality
Primary formats
Eternal formats
Rulings (2)
wotc14 Apr 2023
Whether or not you control another Knight is checked only as Protocol Knight’s ability is resolving. It doesn’t matter if you still control Protocol Knight at that time, or if it’s still a Knight.
wotc14 Apr 2023
Protocol Knight’s ability can target a creature that’s already tapped.
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Ranked by shared capabilities, colour identity, mana value and type. Never by strategic judgement.
About this card
Protocol Knight
Protocol Knight is a Creature — Human Knight, with mana cost {3}{U} (mana value 4).
Format legality: Commander: legal, Modern: legal, Standard: not_legal, Pioneer: legal, Legacy: legal, Pauper: legal.
Current headline price on TCGplayer: $0.22 (up 4.8% over 30 days).
Frequently asked
Protocol Knight FAQ
How much is Protocol Knight worth?
The current TCGplayer USD retail price for Protocol Knight is $0.22. It is up 4.8% over the last 30 days. Over 90 days it has ranged from $0.16 to $0.23.
What is the cheapest printing of Protocol Knight?
The cheapest currently priced paper printing is from March of the Machine at $0.22 on TCGplayer.
What set was Protocol Knight first printed in?
The earliest English paper printing that MTGPrices tracks is from MOM #74, released 2023-04-21.
Is there a foil version of Protocol Knight?
Yes. On this printing, foil copies trade at $0.22 versus $0.22 for nonfoil, which is 0% more expensive on TCGplayer.
Is Protocol Knight legal in Commander?
Yes, Protocol Knight is currently legal in Commander per Scryfall's legality feed.
Is Protocol Knight legal in Modern?
Yes, Protocol Knight is currently legal in Modern per Scryfall's legality feed.
Is Protocol Knight legal in Standard?
Protocol Knight is not currently legal in Standard per Scryfall's legality feed.
What does Protocol Knight do?
Protocol Knight is a Creature — Human Knight with mana cost {3}{U}. Its Oracle text reads: "When this creature enters, tap target creature an opponent controls. Put a stun counter on that creature if you control another Knight. (If a permanent with a stun counter would become untapped, remove one from it instead.)".