Hazezon Tamar

When Hazezon Tamar enters the battlefield,
create X 1/1 Sand Warrior creature tokens that
are red, green, and white at the beginning of your
next upkeep, where X is the number of lands you control at that time.
When Hazezon leaves the battlefield, exile all
Sand Warriors.
Of course a single grain of sand is of little consequence. Countless millions on the other hand...