Rite of Seasons

Landfall - Whenever a land enters the battlefield under your control, put a BlossomCounter on this Card.
Upheaval -Whenever a land leaves the battlefield under your control, you gain 5 Life. Put a Leave Counter on this Card.
Remove {x}BlossomCounters and {x}Leave Counters from this Card:
Search your Library for {x} Basic Lands, put them into Play tapped. There are Snow Lands additional to ther Type.