Eldritch Planar Rift

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