Drought

Mana cost: {2}{W}{W}

Enchantment

At the beginning of your upkeep, sacrifice this enchantment unless you pay {W}{W}. Spells cost an additional "Sacrifice a Swamp" to cast for each black mana symbol in their mana costs. Activated abilities cost an additional "Sacrifice a Swamp" to activate for each black mana symbol in their activation costs.