Bashtiir, Gaia's Envoy

Creatures you don't control cannot attack.
When Bashtiir, Gaia's Envoy enters the battlefield, create a 1/2 Ivy creature token.
At the end step, if you control an untapped land(s), you may tap them, then populate for each land tapped this way.
Lands you control have {t}, add {g} or {w}.