Is Canyon Slough good in Commander?

Canyon Slough

Land — Swamp Mountain

(: Add or .)
This land enters tapped.
Cycling (, Discard this card: Draw a card.)

CMC: 0
Mana cost
Color identity: BR
Rarity: rare
Set: Doctor Who
Price: —
EDHREC rank: #702

Canyon Slough enters tapped, which is the whole cost — in exchange you get a dual land that replaces itself late when you no longer need the mana. Cycling synergies like Escape Protocol make that drawback an upside, and discard-matters commanders like Asmoranomardicadaistinaculdacar treat every cycle as a trigger.

Best Commanders

Commanders with the highest synergy

Asmoranomardicadaistinaculdacar

58.3% of decks · synergy 0.39

Asmoranomardicadaistinaculdacar requires you to have discarded a card to even cast her, and Canyon Slough's cycling feeds that condition while thinning your deck — it's doing double duty as both mana fixing and setup.

Olivia, Opulent Outlaw

44.0% of decks · synergy 0.35

Olivia, Opulent Outlaw runs Rakdos colors and wants a steady stream of action; Canyon Slough cycles away when it's a dead draw late, keeping the hand live without costing a real card slot.

Davros, Dalek Creator

39.6% of decks · synergy 0.35

Davros, Dalek Creator rewards you for making opponents lose life and draws cards off artifacts entering play — Canyon Slough fits cleanly as Grixis mana fixing that doubles as a late-game cantrip.

Hearthhull, the Worldseed

48.1% of decks · synergy 0.32

Hearthhull, the Worldseed decks that cycle heavily want every land to contribute to the engine, and Canyon Slough is one of the few dual lands that actively triggers cycle payoffs rather than just sitting there.

Auntie Ool, Cursewretch

47.9% of decks · synergy 0.32

Auntie Ool, Cursewretch cares about the graveyard and discarding, so Canyon Slough pulling double duty as a Swamp-Mountain that feeds the yard when cycled is exactly the density of value that shell wants.

Format Analysis

Where it lives, where it can’t

Format	Verdict
commander	legal
legacy	legal
modern	legal
pioneer	legal
standard	not legal
vintage	legal
pauper	not legal
oathbreaker	legal

In Commander, Canyon Slough earns its slot in any Rakdos, Grixis, or Jund deck that cycles or cares about the graveyard — the enters-tapped penalty matters far less in a 40-life format where tempo is slower. In competitive Legacy and Vintage, it sees niche play in graveyard and cycling shells where the cantrip mode justifies the tap cost, though fetchable basics are usually preferred for pure mana efficiency. Modern and Pioneer treat it as a budget-accessible dual for Rakdos midrange lists that can tolerate the slowdown, particularly in sideboards or slower builds. Canyon Slough is not legal in Standard or Pauper, so those aren't considerations.

Key Combos

Combo lines featuring this card

27 decks