Leechridden Swamp [Duel Decks: Nissa vs. Ob Nixilis] Condition:Heavily Played (It's an artifact with "Sacrifice

(It's an artifact with "Sacrifice this artifact: Add one mana of any color

The best leaders are made by their followers

Set: Aether Revolt Type: Creature — Human Artificer Rarity: Uncommon Cost: {4}{U}{U} Improvise (Your artifacts can help cast this spell

Each opponent exiles a card from their hand or a permanent they control

Set: Champions of Kamigawa Type: Sorcery Rarity: Rare Cost: {G} Whenever you cast a creature spell this turn

Leechridden Swamp [Duel Decks: Nissa vs. Ob Nixilis] Condition:Heavily Played (It's an artifact with "SacrificeSet: Duel Decks: Nissa vs. Ob Nixilis Type: Land Swamp Rarity: Uncommon ({T}: Add {B}.) Leechridden Swamp enters the battlefield tapped. {B}, {T}: Each opponent loses 1 life. Activate this ability only if you control two or more black permanents.