Squelching Leeches
Creature — Leech
Squelching Leeches's power and toughness are each equal to the number of Swamps you control.
- CMC
- 4
- Mana cost
- Color identity
- B
- Rarity
- uncommon
- Set
- Magic Online Promos
- Price
- —
- EDHREC rank
- #17588
Squelching Leeches enters as an X/X where X equals the number of Swamps you control — in a mono-black deck that's often a 10/10 or better for four mana. Fumulus, the Infestation decks lean on it as a reliable standalone threat that scales automatically without any additional investment.
Best Commanders
Commanders with the highest synergy

Fumulus, the Infestation
Fumulus, the Infestation runs heavily Swamp-dense mana bases, which means Squelching Leeches regularly enters as a massive beater that requires zero setup beyond your land drops.
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 |
Squelching Leeches is a mono-black creature that only rewards you if your deck is built around Swamps — that makes it a near-blank in competitive formats like Legacy, Modern, and Pioneer where dual lands and fetches dilute your basic count. In Commander it earns its slot cleanly: mono-black strategies often run 30-plus Swamps, and a four-mana 12/12 is a legitimate clock. Outside of dedicated black-devotion or Swamp-matters shells, Squelching Leeches stays on the bench.
Key Combos
Combo lines featuring this card
Price Context
Current price
unknown tier
Pricing data for Squelching Leeches isn't available at the moment — check Scryfall or TCGPlayer for a current number. Given its narrow playability outside mono-black Commander shells, it typically sits in bulk-rare territory.
Explore
Sources
Mentioned
- Fumulus, the Infestation
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.