Marsh Gas
Instant
All creatures get -2/-0 until end of turn.
- CMC
- 1
- Mana cost
- Color identity
- B
- Rarity
- common
- Set
- Renaissance
- Price
- —
- EDHREC rank
- #28881
Marsh Gas gives every creature -2/-2 until end of turn for one black mana at instant speed — a sweeper effect stapled to a cantrip-sized price tag. It's narrow but punishing against token swarms and x/2 creature packages, and practically unplayable against anything bigger.
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 | legal |
| oathbreaker | legal |
In Commander, Marsh Gas is a fringe inclusion at best — three opponents mean three boards of creatures, most of which will laugh off -2/-2. It earns a slot only in dedicated aristocrats or token-hate shells where wiping out a field of 1/1s generates meaningful value. Legacy and Vintage have access to it but have no interest; the formats demand efficient answers, and a sorcery-speed-equivalent pump-down with no lasting effect doesn't compete. Pauper is the most plausible home, where x/2 creatures are common and a one-mana mass debuff can occasionally blow out an opponent — though even there, better options exist.
Key Combos
Combo lines featuring this card
Price Context
Current price
unknown tier
Price data for Marsh Gas isn't currently available, which likely reflects its low demand and minimal tournament presence. It's a bulk rare in all but name — if you want a copy, a dime-bin or cheap buylist order is the right move.
Explore
Sources
Mentioned
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.