Yako, Earth's Might

Churn Earth — {t}: Untap target land you control.
It becomes a 1/1 creature that's still a land.
Plains creatures you control have lifelink.
Island creatures you control have flying.
Forest creatures you control have vigilance.
Crystallize — At the beginning of your end step,
you may pay {w}{u}{g}. If you do, put a +1/+1
counter on each land creature you control.