Seed of New Rhythm

{t}: Add {g} to your mana pool.
During your upkeep, put a growth counter on Seed of New Rhythm.
Remove 5 Growth counters from Seed of New Rhythm, Sacrifice Seed of New Rhythm: Search your library for a Dryad or Treefolk creature converted mana cost 5 or less and put it into play, tapped. Shuffle your library afterwards.