The Convergence

Whenever you cast a Rift Spell,
put a Rift counter on The Convergence.
-If there are 5 or more Rift counters on The Convergence,
search your library for a card named, "The Rift"
and put it onto the battlefield.
-If there are 10 or more Rift counters on The Convergence,
at the beginning of your draw step, you may draw
two additional cards.