Prevent all combat damage that would be dealt this turn.

Twinblade Slasher

Wither (This deals damage to creatures in the form of -1/-1 counters.)
{1}{G}: This creature gets +2/+2 until end of turn. Activate only once each turn.

Arbor Elf

Rampant Growth

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Traproot Kami

Defender; reach (This creature can block creatures with flying.)
Traproot Kami's toughness is equal to the number of Forests on the battlefield.

Heritage Druid

Tap three untapped Elves you control: Add {G}{G}{G}.

Folk of An-Havva

Whenever this creature blocks, it gets +2/+0 until end of turn.

Awaken the Woods

Create X 1/1 green Forest Dryad land creature tokens. (They're affected by summoning sickness.)

Ashaya, Soul of the Wild

Ashaya's power and toughness are each equal to the number of lands you control.
Nontoken creatures you control are Forest lands in addition to their other types. (They're still affected by summoning sickness.)

Essence Warden

Whenever another creature enters, you gain 1 life.

Tribute to the World Tree

Whenever a creature you control enters, draw a card if its power is 3 or greater. Otherwise, put two +1/+1 counters on it.

Elvish Lookout

Shroud (This creature can't be the target of spells or abilities.)

Birds of Paradise

Circle of Dreams Druid

{T}: Add {G} for each creature you control.

Nyx Lotus

Nyx Lotus enters tapped.
{T}: Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.)

Harmonize

Lone Wolf

You may have this creature assign its combat damage as though it weren't blocked.

Basking Rootwalla

{1}{G}: This creature gets +2/+2 until end of turn. Activate only once each turn.
Madness {0} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Wild Growth

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

Ezuri's Archers

Reach (This creature can block creatures with flying.)
Whenever this creature blocks a creature with flying, this creature gets +3/+0 until end of turn.

Toski, Bearer of Secrets

This spell can't be countered.
Indestructible
Toski attacks each combat if able.
Whenever a creature you control deals combat damage to a player, draw a card.

Llanowar Tribe

Scryb Sprites

Sedge Scorpion

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Xantid Swarm

Flying
Whenever this creature attacks, defending player can't cast spells this turn.

Glistener Elf

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Ivy Elemental

This creature enters with X +1/+1 counters on it.

Nurturer Initiate

Whenever a player casts a green spell, you may pay {1}. If you do, target creature gets +1/+1 until end of turn.

Elvish Pioneer

When this creature enters, you may put a basic land card from your hand onto the battlefield tapped.

Thorn Elemental

Instill Energy

Enchant creature
Enchanted creature can attack as though it had haste.
{0}: Untap enchanted creature. Activate only during your turn and only once each turn.

Staff of Titania

Equipped creature gets +X/+X, where X is the number of Forests you control.
Whenever equipped creature attacks, create a 1/1 green Forest Dryad land creature token. (It's affected by summoning sickness.)
Equip {3}

Ghalta, Primal Hunger

This spell costs {X} less to cast, where X is the total power of creatures you control.
Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Spore Frog

Sacrifice this creature: Prevent all combat damage that would be dealt this turn.

Wanderlust

Enchant creature
At the beginning of the upkeep of enchanted creature's controller, this Aura deals 1 damage to that player.

Oran-Rief, the Vastwood

This land enters tapped.
{T}: Add {G}.
{T}: Put a +1/+1 counter on each green creature that entered this turn.

Ornithopter

Scythe Tiger

Shroud (This creature can't be the target of spells or abilities.)
When this creature enters, sacrifice it unless you sacrifice a land.

Scute Mob

At the beginning of your upkeep, if you control five or more lands, put four +1/+1 counters on this creature.

Scattershot Archer

{T}: This creature deals 1 damage to each creature with flying.

Nature's Lore

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

Nut Collector

At the beginning of your upkeep, you may create a 1/1 green Squirrel creature token.
Threshold — All Squirrels get +2/+2 as long as seven or more cards are in your graveyard.

Arcane Signet

{T}: Add one mana of any color in your commander's color identity.

Sylvan Anthem

Green creatures you control get +1/+1.
Whenever a green creature you control enters, scry 1.

Elvish Mystic

Llanowar Elves

Sol Ring

Rogue Elephant

When this creature enters, sacrifice it unless you sacrifice a Forest.

Ancient Silverback

{G}: Regenerate this creature. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Squirrel Nest

Enchant land
Enchanted land has "{T}: Create a 1/1 green Squirrel creature token."

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

Myriad Landscape

This land enters tapped.
{T}: Add {C}.
{2}, {T}, Sacrifice this land: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

Venerated Rotpriest

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)
Whenever a creature you control becomes the target of a spell, target opponent gets a poison counter.

Nafs Asp

Whenever this creature 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.

Worldly Tutor

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

Beast Whisperer

Whenever you cast a creature spell, draw a card.

Kaysa

Tamiyo's Safekeeping

Target permanent you control gains hexproof and indestructible until end of turn. You gain 2 life. (A permanent with hexproof and indestructible can't be the target of spells or abilities your opponents control. Damage and effects that say "destroy" don't destroy it.)

Krosan Grip

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Destroy target artifact or enchantment.

Giant Growth

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

Three Visits

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

Elvish Berserker

Whenever this creature becomes blocked, it gets +1/+1 until end of turn for each creature blocking it.

Fyndhorn Elves

Elvish Herder

{G}: Target creature gains trample until end of turn.

Dosan the Falling Leaf

Players can cast spells only during their own turns.

Killer Bees

Flying
{G}: This creature gets +1/+1 until end of turn.

Stream of Life

Tyrranax Rex

This spell can't be countered.
Trample, ward {4}, haste
Toxic 4 (Players dealt combat damage by this creature also get four poison counters.)