Spellbane Centaur

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

Springing Tiger

Threshold — This creature gets +2/+2 as long as there are seven or more cards in your graveyard.

Squirrel Mob

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

Squirrel Nest

Squirrel

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

Still Life

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

Stone-Tongue Basilisk

Whenever this creature deals combat damage to a creature, destroy that creature at end of combat.
Threshold — As long as there are seven or more cards in your graveyard, all creatures able to block this creature do so.

Sylvan Might

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.)

Terravore

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

Twigwalker

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

Kirtar's Wrath

Spirit

Destroy all creatures. They can't be regenerated.
Threshold — If there are seven or more cards in your graveyard, instead destroy all creatures, then create two 1/1 white Spirit creature tokens with flying. Creatures destroyed this way can't be regenerated.

Verdant Succession

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.

Vivify

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

Werebear

{T}: Add {G}.
Threshold — This creature gets +3/+3 as long as there are seven or more cards in your graveyard.

Wild Mongrel

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

Woodland Druid

Zoologist

{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.

Odyssey