Barshack, Woodland Hermit

While Barshack is on the battlefield, all forests
you control are 1/1 green elemental creatures
with indestructible and reach. They're still lands.
{x}, {t}: Return up to {x} nonforest lands you
control to the deck and shuffle it, then search
your deck for up to {x} basic forests and put them
into play tapped. Shuffle your library afterwards.