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Bubbling Muck (54) [Urza's Destiny]
| Set: | Urza's Destiny |
| Type: | Sorcery |
| Rarity: | Common |
| Cost: | B |
| Colors: | B |
Until end of turn, whenever a player taps a Swamp for mana, that player adds an additional {B}.
The muck claims a hundred living things for each meager treasure it spews forth.