Upsius, The Changer

When Upsius, the changer enters the battlefield,
every player gives there library to the player in
there right.
{r},{t}: Search your library for a mountain basic
land, then choose a forest basic land and replace
it with the mountain land. Put the forest land in
your hand. Shuffle your library.
"He might not be the strongest, toughest or smartest,
but he always shows up..."
- Zoy, The Huntress