Pathway Warden

Flash
When Pathway Warden enters the battlefield, add one mana of any color to your mana pool.
"As Oraduk Ra took the first step along the forest path, a figure materialized, barring his way. He spread his hands, showing that he meant no harm, and the warden smiled, silently stepping aside, seeming to melt back into the forest."
-The Saga of Oraduk Rai