Sludge Monster is a rare Creature — Horror card from Commander Legends: Battle for Baldur's Gate (CLB), collector number 735. Current market price: $0.54, TCGplayer market prices via Scryfall.
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.
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