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.)

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.)

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Populate X times. (To populate, create a token that's a copy of a creature token you control. Do this X times.)

When you cast this spell, copy it for each time you've cast your commander from the command zone this game. Reveal cards from the top of your library until you reveal a nonland permanent card. You may put that card onto the battlefield. Then put all cards revealed this way that weren't put onto the battlefield on the bottom of your library in a random order.

Draw three cards.

Search your library for up to X basic land cards, where X is the number of tapped creatures you control, put those cards onto the battlefield tapped, then shuffle.

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

{1}, {T}: This artifact deals 1 damage to any target. That permanent's controller or that player creates a 1/1 green Squirrel creature token.

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

At the beginning of combat on your turn, create a token that's a copy of equipped creature, except the token isn't legendary. That token gains haste. Equip {5}

Imprint — Whenever a nontoken creature dies, you may exile that card. If you do, return each other card exiled with this artifact to its owner's graveyard. {3}, {T}: Create a token that's a copy of a card exiled with this artifact. It gains haste. Exile it at the beginning of the next end step.

This artifact enters tapped. {T}: Add {G}.

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.) As this artifact enters, choose a creature type. Creatures you control of the chosen type get +2/+2.

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

Vanishing 3 (This creature enters with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.) When this creature enters, create four 1/1 green Squirrel creature tokens. Squirrels you control get +1/+1.

Echo {3}{G}{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.) When this creature enters, create four 1/1 green Squirrel creature tokens. Squirrel creatures get +1/+1.

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

When this creature dies, each player may pay any amount of mana. Then each player creates a number of 1/1 green Squirrel creature tokens equal to the amount of mana they paid this way.

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.

Changeling (This card is every creature type.) As this creature enters, choose a creature type. You may look at the top card of your library any time. You may cast creature spells of the chosen type from the top of your library.

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

{1}{G}, Sacrifice a land: Create two 1/1 green Squirrel creature tokens. {1}{G}, Sacrifice a land: Squirrel creatures get +1/+1 until end of turn.

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

Whenever a nontoken creature enters, its controller creates a token that's a copy of that creature. Whenever a nontoken creature leaves the battlefield, exile all tokens with the same name as that creature. When this enchantment leaves the battlefield, exile all tokens created with this enchantment.