Treacherous Terrain
Sorcery
Treacherous Terrain deals damage to each opponent equal to the number of lands that player controls.
Basic landcycling 
(, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)
- CMC
- 8
- Mana cost
- Color identity
- GR
- Rarity
- uncommon
- Set
- Treasure Chest
- Price
- —
- EDHREC rank
- #12600
Treacherous Terrain deals damage to each opponent equal to the number of basic lands you control — in a landfall or lands-matter Commander deck that's routinely 10–15 damage a player, often enough to close a game outright. Eight mana is real, but the effect is a one-shot kill condition, not just a finisher.
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 |
Treacherous Terrain is a Commander card through and through — the multiplayer rules mean one cast can deal lethal damage to every opponent simultaneously, and the longer games run, the more basics you accumulate to fuel it. In Legacy and Vintage it's technically legal but utterly unplayed; those formats end before you ever reach eight mana, and single-target formats strip away the mass-damage upside that makes it worth the cost. Oathbreaker shares enough of Commander's multi-opponent structure that Treacherous Terrain can close games there too, especially with a ramp-heavy green signature spell setting up a faster land count.
Key Combos
Combo lines featuring this card
Price Context
Current price
unknown tier
Pricing data for Treacherous Terrain isn't currently available, so check Scryfall or TCGPlayer for the current market rate before buying. Given that it's a bulk-rare finisher with a narrow home, it almost certainly sits in the under-$1 range — the kind of card you pick up in a trade binder rather than track down as a purchase.
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Sources
Mentioned
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.