Thriving Valley

When Thriving Valley enters the battlefield,
sacrifice it unless you return target Plains,
Mountain, and Forest land you control to their
owners hands.
{t}: Add {w}{r}, {w}{g} or {r}{g}
When a creature enters the battlefield under
your control if its —
• White you gain 2 life.
• Red it gains haste.
• Green put a +1/+1 counter on it.