Koskun Falls [Homelands] Special Colorless Energy Set: Sun & Moon: Lost

Set: Sun & Moon: Lost Thunder Type: Darkness Rarity: Ultra Rare Retreat cost: Colorless

Set: Celebrations: 25th Anniversary - Classic Collection Type: Fire Rarity: Holo Rare Retreat cost: Colorless

1 Distant Melody

Set: Platinum: Base Set Type: Lightning Rarity: Common Retreat cost: Colorless

Set: HeartGold & SoulSilver: Undaunted Type: Grass Rarity: Rare Retreat cost: Colorless

Koskun Falls [Homelands] Special Colorless Energy Set: Sun & Moon: LostSet: Homelands Type: World Enchantment Rarity: Rare Cost: {2}{B}{B} At the beginning of your upkeep, sacrifice Koskun Falls unless you tap an untapped creature you control. Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.