Sludge Monster card art

Sludge Monster

Creature — Horror MV 5

Tracked across real Commander games played through TurnZero HQ.

What it does

Whenever this creature enters or attacks, put a slime counter on up to one other target creature.

Non-Horror creatures with slime counters on them lose all abilities and have base power and toughness 2/2.

Rulings

2 official rulings, in the order Wizards published them.

  • 2021-09-24

    If a non-Horror creature with a slime counter on it somehow becomes a Horror, the effect making it 2/2 and making it lose its abilities ends. Its base power and toughness will revert to whatever it was before that effect started applying, although other effects that modify power and/or toughness, such as ones created by Auras, counters, and the like may still apply. It'll also have whatever abilities it had before it lost them.

  • 2021-09-24

    Sludge Monster's last ability affects all non-Horror creatures with slime counters on them, not just creatures that had slime counters put on them with Sludge Monster's first ability.

Rulings are Wizards of the Coast's own, mirrored from Scryfall and refreshed nightly.

In the 99

Every deck whose current list includes Sludge Monster, whatever its commander.

Decks running it 3
Games played 0
Win rate — Fewer than 5 completed games, which is not enough to publish a rate yet.
Confirmed on board 0 Games where a board photo caught it actually in play.

Most played under

Commander Decks Games Win rate
Captain N'ghathrod 2 0 —
Lazav, Dimir Mastermind 1 0 —

Colors it shows up in

  • Dimir 3 decks

Sludge Monster price history

The Commander Legends: Battle for Baldur's Gate #735 printing, as Scryfall reports the TCGplayer market. Updated nightly.

Non-foil today$0.44▼ $0.22 (33.3%)
Low $0.43 · High $0.66Tracked since Sep 28, 2026
Every recorded price change
DateNon-foil
Nov 11, 2026$0.44
Nov 9, 2026$0.44
Nov 6, 2026$0.45
Nov 3, 2026$0.44
Nov 2, 2026$0.43
Oct 31, 2026$0.44
Oct 29, 2026$0.46
Oct 27, 2026$0.49
Oct 26, 2026$0.50
Oct 24, 2026$0.52
Oct 22, 2026$0.53
Oct 18, 2026$0.54
Oct 16, 2026$0.57
Oct 10, 2026$0.59
Oct 9, 2026$0.63
Oct 6, 2026$0.64
Oct 5, 2026$0.65
Oct 4, 2026$0.64
Sep 29, 2026$0.65
Sep 28, 2026$0.66

A row is recorded only on nights the price moved, so each price held until the row above it.

Every version of Sludge Monster

6 printings, newest first. Prices are the market figures Scryfall publishes, refreshed nightly. A printing with no figure shows a dash rather than a zero, because Scryfall publishes none for some of them. Click a card's art to chart that version's price above.

Prices from Scryfall, which tracks the TCGplayer and Cardmarket markets. They move daily and are a guide rather than a quote. Search TCGplayer for Sludge Monster. It runs a name search across every version, which covers the printings TCGplayer publishes no direct link to.

Aggregated from Commander games tracked in TurnZero HQ. Every figure counts decks and games only. No individual deck list, player or playgroup is identified. Win rates are withheld below 5 completed games, where the sample is too small to mean anything.