Garaga, The Timeless

Garaga the Timeless enters the battlefield with a +1/+1 counter on it for each land card on the battlefield and in all players graveyards.
If Garaga the Timeless would be destroyed, remove a +1/+1 counter from it instead.
When Garaga the Timeless dies exile it.
Search your library for a card called Heart of the Forest and attach it to a Forest land card you control, then shuffle your library.