Naturalize

Radjan Spirit

{T}: Target creature loses flying until end of turn.

Survival of the Fittest

{G}, Discard a creature card: Search your library for a creature card, reveal that card, put it into your hand, then shuffle.

Elven Cache

Return target card from your graveyard to your hand.

Verdant Force

At the beginning of each upkeep, create a 1/1 green Saproling creature token.

Tormod's Crypt

{T}, Sacrifice Tormod's Crypt: Exile target player's graveyard.

Biorhythm

Each player's life total becomes the number of creatures they control.

Seedborn Muse

Untap all permanents you control during each other player's untap step.

Lotus Petal

{T}, Sacrifice Lotus Petal: Add one mana of any color.

Wall of Roots

Defender
Put a -0/-1 counter on Wall of Roots: Add {G}. Activate only once each turn.

Hunting Moa

Echo {2}{G} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When Hunting Moa enters or dies, put a +1/+1 counter on target creature.

Jalum Tome

{2}, {T}: Draw a card, then discard a card.

Llanowar Elves

Defense Grid

Each spell costs {3} more to cast except during its controller's turn.

Pouncing Jaguar

Echo {G} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Forest

Overrun

Creatures you control get +3/+3 and gain trample until end of turn. (Each of those creatures can deal excess combat damage to the player or planeswalker it's attacking.)

Lifeforce

Sylvan Library

At the beginning of your draw step, you may draw two additional cards. If you do, choose two cards in your hand drawn this turn. For each of those cards, pay 4 life or put the card on top of your library.

Killer Bees

Flying
{G}: Killer Bees gets +1/+1 until end of turn.

Warthog

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

Spike Breeder

Spike Breeder enters with three +1/+1 counters on it.
{2}, Remove a +1/+1 counter from Spike Breeder: Put a +1/+1 counter on target creature.
{2}, Remove a +1/+1 counter from Spike Breeder: Create a 1/1 green Spike creature token.