Trample

Gorilla Titan gets +4/+4 as long as there are no cards in your graveyard.

When Ground Seal enters the battlefield, draw a card.

Cards in graveyards can't be the targets of spells or abilities.

{2}, Exile a card from your hand: Return target card from your graveyard to your hand if it shares a card type with the card exiled this way. (Artifact, battle, creature, enchantment, kindred, instant, land, planeswalker, and sorcery are card types.)

Howling Gale deals 1 damage to each creature with flying and each player.

Flashback {1}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Ivy Elemental enters the battlefield with X +1/+1 counters on it.

Reach (This creature can block creatures with flying.)

{G}, Discard a card: Krosan Archer gets +0/+2 until end of turn.

Trample

Threshold — {1}{G}: Regenerate Krosan Avenger. Activate only if seven or more cards are in your graveyard.

Threshold — Krosan Beast gets +7/+7 as long as seven or more cards are in your graveyard.

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

Threshold — Metamorphic Wurm gets +4/+4 as long as seven or more cards are in your graveyard.

Prevent all combat damage that would be dealt this turn.

Flashback {2}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Target creature gets +X/+X until end of turn, where X is 3 plus the number of cards named Muscle Burst in all graveyards.

{G}, {T}: Target creature gets +2/+2 until end of turn.

{T}: Add {C}{G}.

{2}{G}, {T}: Target creature gets +X/+X until end of turn, where X is that creature's power.

Whenever a player casts a spell, that player creates X 1/1 green Squirrel creature tokens, where X is the number of cards in all graveyards with the same name as that spell.

Each player may search their library for up to X basic land cards and put them onto the battlefield tapped. Then each player who searched their library this way shuffles.

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

Threshold — Nimble Mongoose gets +2/+2 as long as seven or more cards are in your graveyard.

At the beginning of your upkeep, you may create a 1/1 green Squirrel creature token.

Threshold — Squirrel creatures get +2/+2 as long as seven or more cards are in your graveyard.

Creatures you control get +3/+3 and gain trample until end of turn.

Shuffle any number of target creature cards from your graveyard into your library.

Enchant creature

Enchanted creature has trample.

Whenever Rabid Elephant becomes blocked, it gets +2/+2 until end of turn for each creature blocking it.

Regenerate target creature.

Draw a card.

Discard any number of cards. Search your library for up to that many basic land cards, reveal them, put them into your hand, then shuffle.

Create a 6/6 green Wurm creature token.

Flashback {3}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Tap an untapped Druid you control: Add {G}.

Enchant creature

Enchanted creature gets +2/+2.

Threshold — As long as seven or more cards are in your graveyard, all creatures able to block enchanted creature do so.

Each player sacrifices an enchantment.

Reach (This creature can block creatures with flying.)

{T}, Sacrifice Skyshooter: Destroy target attacking or blocking creature with flying.

Creatures you control can't be the targets of blue spells or abilities from blue sources.

Threshold — Springing Tiger gets +2/+2 as long as seven or more cards are in your graveyard.

Squirrel Mob gets +1/+1 for each other Squirrel on the battlefield.

Enchant land

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

{G}{G}: Still Life becomes a 4/3 Centaur creature in addition to its other types until end of turn.

Whenever Stone-Tongue Basilisk deals combat damage to a creature, destroy that creature at end of combat.

Threshold — As long as seven or more cards are in your graveyard, all creatures able to block Stone-Tongue Basilisk do so.

Target creature gets +2/+2 and gains trample until end of turn.

Flashback {2}{G}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Trample

Terravore's power and toughness are each equal to the number of land cards in all graveyards.

{1}{G}, Sacrifice Twigwalker: Two target creatures each get +2/+2 until end of turn.

Whenever a green nontoken creature dies, that creature's controller may search their library for a card with the same name as that creature, put it onto the battlefield, then shuffle.

Target land becomes a 3/3 creature until end of turn. It's still a land.

Draw a card.

{T}: Add {G}.

Threshold — Werebear gets +3/+3 as long as seven or more cards are in your graveyard.

Discard a card: Wild Mongrel gets +1/+1 and becomes the color of your choice until end of turn.

{3}{G}, {T}: Reveal the top card of your library. If it's a creature card, put it onto the battlefield. Otherwise, put it into your graveyard.

Sacrifice an Atog creature: Atogatog gets +X/+X until end of turn, where X is the sacrificed creature's power.

Destroy target artifact, target creature, target enchantment, and target land. (You can't cast this spell unless you have legal choices for all its targets.)

Flying, protection from all colors