An infinite combo that requires other pieces to do something. All it generates is infinite token etbs, infinite counters being added/removed, infinite sac triggers, and infinite tap/untaps of a land.
You tap the land with Wild Growth for two mana, create a token with ghave, earthcraft triggers untapping the land with the Wild Growth, spend the other mana to activate Ghave's second activated ability to sac the token and put the counter back on him.