Knuckles the Echidna
Legendary Creature — Echidna Warrior
Double strike, trample, haste
Whenever one or more creatures you control deal combat damage to a player, create a Treasure token.
Treasure Hunter — At the beginning of your upkeep, if you control thirty or more artifacts, you win the game.
- CMC
- 4
- Mana cost
- Color identity
- R
- Rarity
- mythic
- Set
- Secret Lair Drop
- Price
- $18.46
- EDHREC rank
- #2338
Knuckles the Echidna hits the board as a powerful disruption piece that punishes opponents for coordinating, and the effect is immediate — no setup required. The catch is the price tag on Sonic the Hedgehog synergy shells, where Knuckles the Echidna is nearly mandatory and demand keeps the cost honest.
Best Commanders
Commanders with the highest synergy
Sonic the Hedgehog
Sonic the Hedgehog runs Knuckles the Echidna in over 83% of lists because the two form the core of the deck's disruptive engine — Knuckles the Echidna's ability slots directly into what Sonic the Hedgehog wants to be doing every turn.
Shadow the Hedgehog
Shadow the Hedgehog finds Knuckles the Echidna useful for much the same reason — the disruption profile lines up with Shadow the Hedgehog's aggressive, resource-denial gameplan and shows up in nearly 74% of builds.
Jaws, Relentless Predator
Jaws, Relentless Predator is a threat-based commander that benefits from Knuckles the Echidna slowing opponents down long enough for the predator to close games — 64% inclusion rate backs that up.
Amy Rose
Amy Rose decks pick up Knuckles the Echidna to shore up the disruption that Amy Rose herself doesn't provide, giving the deck a harder defensive piece at just under a 50% inclusion rate.
Kratos, God of War
Kratos, God of War is less reliant on Knuckles the Echidna than the Sonic-adjacent commanders, but a 34% inclusion rate signals that enough Kratos pilots value the disruption to make it worth considering in that shell.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | not legal |
| pioneer | not legal |
| standard | not legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Commander is where Knuckles the Echidna does its best work — 100-card singleton means opponents can't hedge around it easily, and multiplayer politics amplify any effect that punishes coordination. Legacy and Vintage legality exists on paper, but the competitive environments there move too fast for a card at this cost and effect density to matter; no serious 60-card shell is reaching for it. Oathbreaker is a reasonable secondary home if the planeswalker at the helm rewards the disruption angle, but the card's ceiling is firmly in Commander.
Key Combos
Combo lines featuring this card
Budget Alternatives
Cheaper options that do most of the same work
Knuckles the Echidna is hard to replace cleanly because the combination of stats and disruptive ability is specific, but creature-based hate pieces in the same color identity that tax opponent actions can cover part of the role for a fraction of the price. The trade-off is consistency — budget substitutes typically do one thing instead of two, so you give up either the body or the disruption effect depending on which card you reach for.
Price Context
Current price
$18.46 mid tier
At $18.46, Knuckles the Echidna sits in the mid tier — expensive enough to feel in a budget build, not so expensive it's out of reach for a focused purchase. Given the 83%-plus inclusion rate in the most popular shell that runs it, demand is structural rather than speculative, which means the price is unlikely to crater without a reprint.
Explore
Sources
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.