Vitalize

Sabertooth Cobra

Whenever Sabertooth Cobra deals damage to a player, that player gets a poison counter. The player gets another poison counter at the beginning of their next upkeep unless they pay {2} before that step. (A player with ten or more poison counters loses the game.)

Natural Order

As an additional cost to cast this spell, sacrifice a green creature.
Search your library for a green creature card, put it onto the battlefield, then shuffle.

Llanowar Sentinel

When Llanowar Sentinel enters, you may pay {1}{G}. If you do, search your library for a card named Llanowar Sentinel, put that card onto the battlefield, then shuffle.

Tranquility

Living Lands

All Forests are 1/1 creatures that are still lands.

Fyndhorn Elder

Nafs Asp

Whenever Nafs Asp deals damage to a player, that player loses 1 life at the beginning of their next draw step unless they pay {1} before that draw step.

Nature's Lore

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

Stalking Tiger

Stalking Tiger can't be blocked by more than one creature.

Venom

Enchant creature
Whenever enchanted creature blocks or becomes blocked by a non-Wall creature, destroy the other creature at end of combat.

Scaled Wurm

River Boa

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
{G}: Regenerate River Boa.

Mangara's Tome

When Mangara's Tome enters, search your library for five cards, exile them in a face-down pile, and shuffle that pile. Then shuffle your library.
{2}: The next time you would draw a card this turn, instead put the top card of the exiled pile into its owner's hand.

Crash of Rhinos

Kyscu Drake

Flying
{G}: Kyscu Drake gets +0/+1 until end of turn. Activate only once each turn.
Sacrifice Kyscu Drake and a creature named Spitting Drake: Search your library for a card named Viashivan Dragon, put that card onto the battlefield, then shuffle.

Hurricane

Hurricane deals X damage to each creature with flying and each player.

Llanowar Elves

Worldly Tutor

Search your library for a creature card, reveal it, then shuffle and put the card on top.

Familiar Ground

Each creature you control can't be blocked by more than one creature.

Whirling Dervish

Protection from black
At the beginning of each end step, if Whirling Dervish dealt damage to an opponent this turn, put a +1/+1 counter on it.

Fyndhorn Elves

Durkwood Boars

Killer Bees

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

Primeval Force

When Primeval Force enters, sacrifice it unless you sacrifice three Forests.

Hall of Gemstone

At the beginning of each player's upkeep, that player chooses a color. Until end of turn, lands tapped for mana produce mana of the chosen color instead of any other color.

Monstrous Growth

Target creature gets +4/+4 until end of turn.

Llanowar Druid

{T}, Sacrifice Llanowar Druid: Untap all Forests.

Craw Giant

Trample
Rampage 2 (Whenever this creature becomes blocked, it gets +2/+2 until end of turn for each creature blocking it beyond the first.)

Seedling Charm

Choose one —
• Return target Aura attached to a creature to its owner's hand.
• Regenerate target green creature.
• Target creature gains trample until end of turn.

An-Havva Constable

An-Havva Constable's toughness is equal to 1 plus the number of green creatures on the battlefield.

Stampede

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

Marsh Viper

Whenever Marsh Viper deals damage to a player, that player gets two poison counters. (A player with ten or more poison counters loses the game.)

Giant Growth

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

Sylvan Hierophant

When Sylvan Hierophant dies, exile Sylvan Hierophant, then return another target creature card from your graveyard to your hand.

Barishi

When Barishi dies, exile Barishi, then shuffle all creature cards from your graveyard into your library.

Viashivan Dragon

Flying
{R}: Viashivan Dragon gets +1/+0 until end of turn.
{G}: Viashivan Dragon gets +0/+1 until end of turn.

Elven Cache

Return target card from your graveyard to your hand.

Forest

Quirion Elves

As Quirion Elves enters, choose a color.
{T}: Add {G}.
{T}: Add one mana of the chosen color.

Mindbender Spores

Defender (This creature can't attack.)
Flying
Whenever Mindbender Spores blocks a creature, put four fungus counters on that creature. The creature gains "This creature doesn't untap during your untap step if it has a fungus counter on it" and "At the beginning of your upkeep, remove a fungus counter from this creature."

Gaea's Blessing

Target player shuffles up to three target cards from their graveyard into their library.
Draw a card.
When Gaea's Blessing is put into your graveyard from your library, shuffle your graveyard into your library.