Keeper of Progenitus [Shards of Alara]

Set: Shards of Alara Type: Creature — Elf Druid Rarity: Rare Cost: {3}{G} Whenever a player taps a Mountain, Forest, or Plains for mana, that player adds one mana of any type that land produced. He watches over the valley where Progenitus sleeps, culling signs from its steaming breaths.