MAGIC: THE GATHERING
|Edition:||2011 Core Set|
Dragonskull Summit enters the battlefield tapped unless you control a Swamp or a Mountain.
: Add or to your mana pool.
Often referred to as "buddy lands," this non-basic land cycle has been around since Magic 2010. They've appeared in Standard twice with the Ravnica shocklands, which help them come into play untapped more frequently.