Search your library for a basic land card and reveal it. If there's a tree in its art, put it onto the battlefield tapped. Otherwise, put it into your hand. Then shuffle your library.
The tree doesnâ€™t have to be alive, but it must be recognizably tree-shaped. Wooden structures that were once trees donâ€™t count.
Stumps donâ€™t count. Theyâ€™re like the absence of trees.