Dystopia [Alliances] Pro Tour Collector Set sacrifice it unless you sacrifice

sacrifice it unless you sacrifice two Swamps

When Aura Thief dies

Set: Neo Destiny Unlimited Type: Water Rarity: Rare Retreat cost: Colorless

Set: EX: Dragon Frontiers Type: Lightning Rarity: Ultra Rare Retreat cost: Colorless

Dystopia [Alliances] Pro Tour Collector Set sacrifice it unless you sacrificeSet: Alliances Type: Enchantment Rarity: Rare Cost: {1}{B}{B} Cumulative upkeepPay 1 life. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) At the beginning of each player's upkeep, that player sacrifices a green or white permanent.