Rosar, Sower Eternal

Expel {4}
When Rosar, Sower Eternal enters the battlefield
or dies, you may search any library for a land
card, put that card onto the battlefield tapped,
then shuffle the searched library.
{4}: Return Rosar, Sower Eternal from the
chaotic graveyard to the battlefield tapped.
Activate this ability only if it is your turn.