Spirit of Growth

{g}, Sacrifice a Spirit, put a growth counter on
Spirit of Growth: Search your library for a forest
card and put it into play tapped, then shuffle.
Sacrifice a Forest, Remove all growth counters
from Spirit of Growth: Search your library for
a Spirit card with mana value equal or less than
the amount of growth counters removed and
put it onto the battlefield tapped, then shuffle.
Life wants growth; growth is prosperity.