Thundering Tanadon

({G/P} can be paid with either {G} or 2 life.)
Trample

Boreal Druid

Mold Shambler

Kicker {1}{G} (You may pay an additional {1}{G} as you cast this spell.)
When this creature enters, if it was kicked, destroy target noncreature permanent.

Three Visits

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

Elvish Mystic

Llanowar Elves

Ulamog's Crusher

Annihilator 2 (Whenever this creature attacks, defending player sacrifices two permanents of their choice.)
This creature attacks each combat if able.

Arbor Elf

Omega, Heartless Evolution

Wave Cannon — When Omega enters, for each opponent, tap up to one target nonland permanent that opponent controls. Put X stun counters on each of those permanents and you gain X life, where X is the number of nonbasic lands you control. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Scatter the Seeds

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Create three 1/1 green Saproling creature tokens.

Greater Sandwurm

This creature can't be blocked by creatures with power 2 or less.
Cycling {2} ({2}, Discard this card: Draw a card.)

Wild Growth

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

Krosan Tusker

Cycling {2}{G} ({2}{G}, Discard this card: Draw a card.)
When you cycle this card, you may search your library for a basic land card, reveal that card, put it into your hand, then shuffle. (Do this before you draw.)

Yavimaya Sapherd

When this creature enters, create a 1/1 green Saproling creature token.

Nature's Lore

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

Fyndhorn Elves

Skyshroud Claim

Search your library for up to two Forest cards, put them onto the battlefield, then shuffle.