Quick Answer

Diamond Knight is a uncommon Artifact Creature — Knight from M20 (M20) costing {3}. Current price: $0.16 USD. Legal in Modern. Legal in Commander.

Diamond Knight MTG card

Diamond Knight

Artifact Creature — Knight

Card Text

Vigilance (Attacking doesn't cause this creature to tap.) As this creature enters, choose a color. Whenever you cast a spell of the chosen color, put a +1/+1 counter on this creature.

Card Stats

1/1 uncommon CMC: 3.0 M20 M20 🎨 Alayna Danner
Vigilance

Market Prices

TCGPlayer
$0.16
Normal
Buy
TCGPlayer
$0.48
Foil
Buy
Card Kingdom
$0.35
Normal
Buy
Card Kingdom
$0.79
Foil
Buy
Cardmarket
€0.02
Normal
Buy
Cardmarket
€0.47
Foil
Buy
Prices updated: 2025-12-04

Format Legality

Brawl Legal
Commander Legal
Duel Legal
Gladiator Legal
Historic Legal
Legacy Legal
Modern Legal
Oathbreaker Legal
Pioneer Legal
Timeless Legal
Vintage Legal

Similar Cards

Community Stats

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Decks Using This Card
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Comments

Often Played With

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Frequently Asked Questions

What is Diamond Knight? Basics

Diamond Knight is a Artifact Creature — Knight card from the Magic: The Gathering trading card game.

Its ability reads: "Vigilance (Attacking doesn't cause this creature to tap.) As this creature enters, choose a color. Whenever you cast a spell of the chosen color, put a +1/+1 counter on this creature."

How much mana does Diamond Knight cost to cast? Basics

Diamond Knight has a mana cost of {3}, which equals 3.0 total mana (converted mana cost/mana value).

It is a colorless card and can be cast with any color of mana.

What does mana cost mean in Magic: The Gathering? Basics

Mana cost is the amount and type of mana required to cast a spell in Magic: The Gathering.

Diamond Knight's mana cost of {3} means you need to pay that much mana from your lands or other sources.

Colored symbols (W=White, U=Blue, B=Black, R=Red, G=Green) must be paid with that specific color, while numbers can be paid with any color.

What is converted mana cost (CMC) or mana value? Basics

Converted mana cost (now officially called "mana value") is the total amount of mana in a card's mana cost, regardless of color.

Diamond Knight has a mana value of 3.0. This is important for effects that care about a spell's total cost, like cascade or cards that say "mana value 3 or less."

What is oracle text? Basics

Oracle text is the official, current rules text for a Magic card as maintained by Wizards of the Coast. It supersedes any printed text on older cards.

Diamond Knight's current oracle text is: "Vigilance (Attacking doesn't cause this creature to tap.) As this creature enters, choose a color. Whenever you cast a spell of the chosen color, put a +1/+1 counter on this creature."

What is the current price of Diamond Knight? Pricing

The current market price for Diamond Knight is approximately $0.16 USD on TCGPlayer.

A foil copy costs approximately $0.48 USD.

On Cardmarket (Europe), it's approximately €0.02 EUR.

Where can I buy Diamond Knight? Pricing

You can purchase Diamond Knight from major MTG retailers including:

Prices vary by condition and printing. Check multiple sellers to find the best price.

What is the difference between normal and foil cards? Pricing

Foil cards have a shiny, holographic finish that makes them more collectible. They are functionally identical to normal cards but typically cost more due to their rarity and visual appeal.

Diamond Knight normal: $0.16 | foil: $0.48

Is Diamond Knight legal in Standard? Legality

Format legality information for Diamond Knight in Standard is not available.

Standard is a rotating format that only allows cards from the most recent sets.

Is Diamond Knight legal in Modern? Legality

Diamond Knight is Legal in Modern format.

Modern includes all cards printed in a standard-legal set from 8th Edition forward.

Is Diamond Knight legal in Commander (EDH)? Legality

Diamond Knight is Legal in Commander (EDH) format.

Commander is a casual multiplayer format where you build a 100-card singleton deck around a legendary creature.

Is Diamond Knight legal in Pioneer? Legality

Diamond Knight is Legal in Pioneer format.

Pioneer is a non-rotating format that includes all standard-legal sets from Return to Ravnica forward.

Is Diamond Knight legal in Legacy? Legality

Diamond Knight is Legal in Legacy format.

Legacy allows almost all cards ever printed, with a substantial ban list for balance.

Is Diamond Knight legal in Vintage? Legality

Diamond Knight is Legal in Vintage format.

Vintage is the most permissive format, allowing almost all cards with only a minimal ban list. Some powerful cards are "Restricted" (limited to 1 copy).

Is Diamond Knight legal in Pauper? Legality

Format legality information for Diamond Knight in Pauper is not available.

Pauper only allows cards that have been printed at common rarity in a paper or online set.

What is format legality in MTG? Legality

Format legality indicates which official MTG formats allow a card to be played:

  • Legal: Card is allowed in the format
  • Banned: Card is prohibited from play
  • Restricted: Limited to 1 copy (Vintage only)
  • Not Legal: Card was never part of that format's card pool

Different formats have different banned lists based on power level and game balance.

What set is Diamond Knight from? Details

This printing of Diamond Knight is from M20 (M20), with collector number 224.

Diamond Knight may also appear in other MTG sets with different art or special treatments.

What is Diamond Knight's rarity? Details

Diamond Knight is a uncommon card in M20.

Card rarity affects both availability and price. From rarest to most common: Mythic Rare → Rare → Uncommon → Common.

Who illustrated Diamond Knight? Details

Diamond Knight was illustrated by Alayna Danner.

Magic: The Gathering features artwork from hundreds of talented artists, and many cards have been reprinted with new art over the years.

What is Diamond Knight's power and toughness? Details

Diamond Knight is a 1/1 creature.

Power (1) determines how much combat damage the creature deals. Toughness (1) determines how much damage it can take before being destroyed.

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