+"Land", +"Mirrodin" (14)
: Add .
, : Tap target noncreature artifact.
Cloudpost enters the battlefield tapped.
: Add for each Locus on the battlefield.
At the beginning of the end step, if you control no artifacts, sacrifice Glimmervoid.
: Add one mana of any color.
: Stalking Stones becomes a 3/3 Elemental artifact creature that's still a land. (This effect lasts indefinitely.)
Gatherer works better in the Companion app!