Pyrohemia [Commander 2011] Instant Set: Ravnica: City of Guilds

Set: Ravnica: City of Guilds Type: Land — Mountain Plains Rarity: Rare ({T}: Add {R} or {W}

You may activate the loyalty abilities of planeswalkers you control twice each turn rather than only once

Set: Neo Destiny 1st Edition Type: Grass Rarity: Uncommon Retreat cost: Colorless

Then that player loses all unspent mana and you add the mana lost this way

Pyrohemia [Commander 2011] Instant Set: Ravnica: City of GuildsSet: Commander 2011 Type: Enchantment Rarity: Uncommon Cost: {2}{R}{R} At the beginning of the end step, if no creatures are on the battlefield, sacrifice Pyrohemia. {R}: Pyrohemia deals 1 damage to each creature and each player.