Opal Palace [Commander Masters]

Set: Commander Masters Type: Land Rarity: Common T: Add C to your mana pool.1, T: Add to your mana pool one mana of any color in your commander's color identity. If you spend this mana to cast your commander, it enters the battlefield with a number of additional +1/+1 counters on it equal to the number of times it's been cast from the command zone this game.