Flying

Whenever Ancient Brass Dragon deals combat damage to a player, roll a d20. When you do, put any number of target creature cards with total mana value X or less from graveyards onto the battlefield under your control, where X is the result.

Create X 1/2 green Spider creature tokens with reach, where X is the number of creatures attacking you. Prevent all combat damage that would be dealt this turn by non-Spider creatures.

Exile two target nonartifact creatures. Ashes to Ashes deals 5 damage to you.

Whenever you cast a creature spell, draw a card.

At the beginning of your precombat main phase, choose one or more --

• Sell Contraband -- Create a Treasure token. You lose 1 life.

• Buy Information -- Draw a card. You lose 2 life.

• Hire a Mercenary -- Create a 3/2 colorless Shapeshifter creature token with changeling. You lose 3 life. (It has every creature type.)

{2}, {T}: Add {B} for each Swamp you control.

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.)

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

If one or more tokens would be created under your control, those tokens plus that many 1/1 green Squirrel creature tokens are created instead.

{B}, Sacrifice X Squirrels: Target creature gets +X/-X until end of turn.

At the beginning of your upkeep, you may sacrifice a token. If you do, put an acorn counter on Chitterspitter.

Squirrels you control get +1/+1 for each acorn counter on Chitterspitter.

{G}, {T}: Create a 1/1 green Squirrel creature token.

Commander creatures you own have "At the beginning of your end step, if a creature card was put into your graveyard from anywhere this turn, create two tapped 1/1 green Squirrel creature tokens."

Deathcap Glade enters the battlefield tapped unless you control two or more other lands.

{T}: Add {B} or {G}.

Vanishing 3 (This creature enters the battlefield 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 Deep Forest Hermit enters the battlefield, 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 Deranged Hermit enters the battlefield, create four 1/1 green Squirrel creature tokens.

Squirrel creatures get +1/+1.

Cleave {1}{B}{B}{G} (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.)

Search your library for a [basic land] card, [reveal it,] put it into your hand, then shuffle.

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

If an effect would put one or more counters on a permanent you control, it puts twice that many of those counters on that permanent instead.

When Drey Keeper enters the battlefield, create two 1/1 green Squirrel creature tokens.

{3}{B}: Squirrels you control get +1/+0 and gain menace until end of turn.

Tap an untapped creature you control: Untap target basic land.

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

Alliance -- Whenever another creature enters the battlefield under your control, choose one that hasn't been chosen this turn --

• Put a +1/+1 counter on Gala Greeters.

• Create a tapped Treasure token.

• You gain 2 life.

({T}: Add {G}.)

Gingerbread Cabin enters the battlefield tapped unless you control three or more other Forests.

When Gingerbread Cabin enters the battlefield untapped, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")

Destroy target creature or planeswalker.

Tokens you control have "{T}: Add {G}."

Choose a Background (You can have a Background as a second commander.)

Sacrifice any number of artifacts, enchantments, and/or tokens. Return that many creature cards from your graveyard to the battlefield.

{T}: Add {C}.

{T}: Add {B} or {G}. Llanowar Wastes deals 1 damage to you.

Whenever a creature you control dies, put a loyalty counter on Lolth, Spider Queen.

0: You draw a card and you lose 1 life.

-3: Create two 2/1 black Spider creature tokens with menace and reach.

-8: You get an emblem with "Whenever an opponent is dealt combat damage by one or more creatures you control, if that player lost less than 8 life this turn, they lose life equal to the difference."

Flying

Whenever you create or sacrifice a token, each opponent loses 1 life.

{T}: Add {C}.

{T}: Add one mana of any color. Activate only if Mirrex entered the battlefield this turn.

{3}, {T}: Create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and "This creature can't block." (Players dealt combat damage by it also get a poison counter.)

Play with the top card of your library revealed.

As long as the top card of your library is a creature card, Mul Daya Channelers gets +3/+3.

As long as the top card of your library is a land card, Mul Daya Channelers has "{T}: Add two mana of any one color."

Whenever a token you control leaves the battlefield, each opponent loses 1 life and you gain 1 life.

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.

Whenever another nontoken creature dies, you may create a 1/1 black Rat creature token.

Rats you control have deathtouch.

({T}: Add {B} or {G}.)

As Overgrown Tomb enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Rats you control have menace.

{1}{B}, {T}: Create a 1/1 black Rat creature token.

{2}{B}{B}, {T}, Sacrifice three Rats: Gain control of target creature.

Whenever you sacrifice an artifact or creature, put a +1/+1 counter on Ravenous Squirrel.

{1}{B}{G}, Sacrifice an artifact or creature: You gain 1 life and draw a card.

Restless Cottage enters the battlefield tapped.

{T}: Add {B} or {G}.

{2}{B}{G}: Restless Cottage becomes a 4/4 black and green Horror creature until end of turn. It's still a land.

Whenever Restless Cottage attacks, create a Food token and exile up to one target card from a graveyard.

Create X 2/2 black Zombie Berserker creature tokens, where X is the number of nontoken creatures that died this turn.

Foretell {B} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Lands you control and land cards in your library are basic.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

When Shriekmaw enters the battlefield, destroy target nonartifact, nonblack creature.

Evoke {1}{B} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

When Springbloom Druid enters the battlefield, you may sacrifice a land. If you do, search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

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."

Other Squirrels you control get +1/+1.

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

{T}: Add {C}.

{T}: Regenerate target Insect, Rat, Spider, or Squirrel. (The next time it would be destroyed, instead tap it, remove it from combat, and heal all damage on it.)

{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

The Shire enters the battlefield tapped unless you control a legendary creature.

{T}: Add {G}.

{1}{G}, {T}, Tap an untapped creature you control: Create a Food token.

This spell can't be countered.

Indestructible

Toski, Bearer of Secrets attacks each combat if able.

Whenever a creature you control deals combat damage to a player, draw a card.

Destroy all enchantments.

{T}: Add {C}.

{B/G}, {T}: Add {B}{B}, {B}{G}, or {G}{G}.

Each land is a Swamp in addition to its other land types.

Choose two --

• Target player creates two tapped 1/1 green Squirrel creature tokens.

• Counter target loyalty ability of a planeswalker.

• Exile target card from a graveyard.

• Target player gains 3 life.

{T}: Add {C}.

{5}, {T}, Pay 1 life: Create a 1/1 white and black Human Cleric creature token.

{5}, {T}, Sacrifice five creatures: Transform Westvale Abbey, then untap it.

Flying, lifelink, indestructible, haste

When Wood Elves enters the battlefield, search your library for a Forest card, put that card onto the battlefield, then shuffle.

Woodland Cemetery enters the battlefield tapped unless you control a Swamp or a Forest.

{T}: Add {B} or {G}.

Each land is a Forest in addition to its other land types.