MAGIC: THE GATHERING
: Add one mana of any color to your mana pool. During your next untap step, as you untap your permanents, return Undiscovered Paradise to its owner's hand.
Seeing plenty of play in Vintage Dredge, Undiscovered Paradise allows a consistent recursion for any Bloodghasts in your graveyard. Pair this with Ichorids and Narcomoeba, you'll have an army of creatures without paying a single mana.