Rootbound Crag | Magic: The Gathering
Formats Rootbound Crag is Legal in
Official Oracle Text for Rootbound Crag
: Add or to your mana pool.
Official Rulings for Rootbound Crag
10/1/2009 : As this is entering the battlefield, it checks for lands that are already on the battlefield. It won't see lands that are entering the battlefield at the same time (due to Warp World, for example).