Yavimaya Ants

Trample, haste
Cumulative upkeep {G}{G} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Snow-Covered Forest

Stampede

Attacking creatures get +1/+0 and gain trample until end of turn.

Undergrowth

As an additional cost to cast this spell, you may pay {2}{R}.
Prevent all combat damage that would be dealt this turn. If this spell's additional cost was paid, this effect doesn't affect combat damage that would be dealt by red creatures.

Thoughtleech

Whenever an Island an opponent controls becomes tapped, you may gain 1 life.

Wild Growth

Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional {G}.

Tarpan

When this creature dies, you gain 1 life.

Balduvian Bears

Woolly Mammoths

This creature has trample as long as you control a snow land.

Giant Growth

Target creature gets +3/+3 until end of turn.

Forest

Brown Ouphe

{1}{G}, {T}: Counter target activated ability from an artifact source. (Mana abilities can't be targeted.)

Kaysa

Hail Storm

Hail Storm deals 2 damage to each attacking creature and 1 damage to you and each creature you control.

Bounty of the Hunt

You may exile a green card from your hand rather than pay this spell's mana cost.
Distribute three +1/+1 counters among one, two, or three target creatures. For each +1/+1 counter you put on a creature this way, remove a +1/+1 counter from that creature at the beginning of the next cleanup step.

Nature's Lore

Search your library for a Forest card, put that card onto the battlefield, then shuffle.