Grazing Gladehart

Landfall — Whenever a land you control enters, you may gain 2 life.

Plains

Trained Pronghorn

Discard a card: Prevent all damage that would be dealt to Trained Pronghorn this turn.

Primal Bellow

Target creature gets +1/+1 until end of turn for each Forest you control.

Groundswell

Target creature gets +2/+2 until end of turn.
Landfall — If you had a land enter the battlefield under your control this turn, that creature gets +4/+4 until end of turn instead.

Forest

Emerald Oryx

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)

Wary Okapi

Might of Oaks

Target creature gets +7/+7 until end of turn.

Invigorate

If you control a Forest, rather than pay this spell's mana cost, you may have an opponent gain 3 life.
Target creature gets +4/+4 until end of turn.

Nissa, Who Shakes the World

Whenever you tap a Forest for mana, add an additional {G}.
+1: Put three +1/+1 counters on up to one target noncreature land you control. Untap it. It becomes a 0/0 Elemental creature with vigilance and haste that's still a land.
−8: You get an emblem with "Lands you control have indestructible." Search your library for any number of Forest cards, put them onto the battlefield tapped, then shuffle.