Field of the Dwarves

Field of the Dwarves enters the battlefield
tapped.
{t} add {c}
Whenever Field of the Dwarves or another land
enters the battlefield under your control, if you
control seven or more lands with different names,
create a 0/1 white snow creature token with "At
the begining of your upkeep,if you control seven
or more non-token Dwarves, you win the game.".
"Heigh-ho, heigh-ho, it's off to work we go"