Marshland Caretaker

When Marshland Caretaker enters the battlefield, you may return a green or black card from exile or your graveyard to your hand.
"One of the most kind and gentle creatures in this world. The Marshland Caretakers may have a terrifying appearance, but they mean to only aid travelers and animals that might be injured or lost. I have encountered many in my travels and I always make an effort to thanks these gentle giants for their kindness. -Marshland Wayfinder