Forest

Monstrous Growth

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

Windstorm

Windstorm deals X damage to each creature with flying.

Chatterstorm

Create a 1/1 green Squirrel creature token.
Storm (When you cast this spell, copy it for each spell cast before it this turn.)

Parallel Lives

If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.

Second Harvest

For each token you control, create a token that's a copy of that permanent.

Lure

Enchant creature
All creatures able to block enchanted creature do so.

Druid's Call

Enchant creature
Whenever enchanted creature is dealt damage, its controller creates that many 1/1 green Squirrel creature tokens.

Chatter of the Squirrel

Create a 1/1 green Squirrel creature token.
Flashback {1}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Acorn Harvest

Create two 1/1 green Squirrel creature tokens.
Flashback—{1}{G}, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Squirrel Mob

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

Giant Growth

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

Restock

Return two target cards from your graveyard to your hand. Exile Restock.

Reclaim

Put target card from your graveyard on top of your library.

Overwhelm

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Creatures you control get +3/+3 until end of turn.

Prevent all combat damage that would be dealt this turn.

Squirrel Nest

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