Exploring the North

Search your library for up to four basic lands.
Reveal them, then put one into play under your control, one into your hand, and exile the rest
face up. Shuffle your library afterwards.
Forecast — {1}{w}{u}, Reveal Exploring the North
from your hand: put up to one land you control
from exile onto the battlefield and one into your
hand.(Activate this ability only during your upkeep
and only once each turn.)