Light Planar Rift

At the beginning of your upkeep put a charge
counter on Light Planar Rift for each leyline you control.
At the beginning of your upkeep create a 1/1
white Elemental creature token for each charge
counter on Light Planar Rift.
Whenever Light Planar Rift has 10 or more
charge counters on it, sacrifice it.