Quandrix, the Proof
Legendary Creature — Elder Dragon
Flying, trample
Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)
Instant and sorcery spells you cast from your hand have cascade.
- CMC
- 6
- Mana cost
- Color identity
- GU
- Rarity
- mythic
- Set
- Secrets of Strixhaven
- Price
- $4.51
- EDHREC rank
- #11116
Quandrix, the Proof lands and immediately doubles whatever land count you're about to hit — the on-board math is real, not incremental. The ceiling is high enough that Averna, the Chaos Bloom decks claim it in over half their lists, which tells you everything about how the format values it.
Best Commanders
Commanders with the highest synergy
Averna, the Chaos Bloom
Averna, the Chaos Bloom cascades into permanents on every cascade trigger, and Quandrix, the Proof turns each of those land hits into compounding acceleration — the two cards form a self-reinforcing ramp engine that's hard to stop once it starts.
Imoti, Celebrant of Bounty
Imoti, Celebrant of Bounty gives cascade to every spell with CMC six or greater, so Quandrix, the Proof slides into the cascade chain naturally while also amplifying the lands that fuel Imoti's expensive spells in the first place.
Maelstrom Wanderer
Maelstrom Wanderer's double cascade already demands a land-dense, high-CMC shell, and Quandrix, the Proof fits both requirements while doubling down on the mana advantage the cascades generate.
Kellan, the Kid
Kellan, the Kid tutors and replays Adventures, so Quandrix, the Proof earns its slot by converting that spell volume into a land count that lets Kellan keep firing without missing a beat.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | legal |
| standard | legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Commander is where Quandrix, the Proof does its best work — 100-card decks reward sustained mana advantages, and the multiplier effect compounds across a long game in ways that 60-card formats rarely allow. In Pioneer, Modern, and Legacy, the effect is powerful in theory but slow enough that dedicated ramp shells would need to justify the slot against cheaper alternatives. Standard is the one exception worth watching, since early-format land-matters archetypes can leverage it before the format's answers catch up. Oathbreaker sits close enough to Commander in structure that the same cascade and land-matters synergies apply.
Key Combos
Combo lines featuring this card
Price Context
Current price
$4.51 cheap tier
At $4.51, Quandrix, the Proof sits in the cheap tier — accessible enough that running it in any compatible list is an easy decision. Given its 53% inclusion rate in Averna, the Chaos Bloom decks alone, the price reflects real demand without the spike risk of a narrower build-around.
Explore
Sources
Mentioned
- Averna, the Chaos Bloom
- Imoti, Celebrant of Bounty
- Maelstrom Wanderer
- Kellan, the Kid
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.