MAGIC: THE GATHERING
: Add to your mana pool.
, : Add , , or to your mana pool.
The "Filter Lands" from Shadowmoor and Eventide represents a period in Magic's history when the mana was absolutely incredible. Along side Vivid lands and Reflecting Pool, the filter lands allowed deck builders to put Cloud Thresher, Cryptic Command, and Cruel Ultimatum in the same deck. (And for that deck to be really good.)