Until end of turn, whenever a player taps a Swamp for mana, that player adds an additional {B}.
Mana cost
B
Mana value
1
Printings
From
$2.17
EDHREC rank
#2251
Buy
Formats
Legacy
Legal
Vintage
Legal
Commander
Legal
Pauper
Legal
Rulings
4 Oct 2004
Affects lands tapped for rest of turn, not just swamps on the battlefield at the time it resolves. This is because it affects players and not the lands themselves.
4 Oct 2004
Affects lands with type Swamp, not lands that are named “Swamp.”