Everglades

Everglades enters the battlefield tapped.\r
When Everglades enters the battlefield, sacrifice it unless you return an untapped Swamp you control to its owner's hand.\r
{T}: Add {1}{B} to your mana pool.

This land enters tapped.
When this land enters, sacrifice it unless you return an untapped Swamp you control to its owner's hand.
{T}: Add {C}{B}.

Everglades comes into play tapped.
When Everglades comes into play, return an untapped swamp you control to owner's hand or bury Everglades.
ocT: Add {B} and one colorless mana to your mana pool.