Goblins you control and Elementals you control have menace. (They can't be blocked except by two or more creatures.)

When Goblin Matron enters the battlefield, you may search your library for a Goblin card, reveal that card, put it into your hand, then shuffle.

Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.) Whenever Grenzo's Ruffians deals combat damage to an opponent, it deals that much damage to each other opponent.

Double strike Whenever Warren Instigator deals damage to an opponent, you may put a Goblin creature card from your hand onto the battlefield.

Haste Whenever Amber Gristle O'Maul attacks, you may discard your hand. If you do, draw a card for each player being attacked. Choose a Background (You can have a Background as a second commander.)

{T}, Discard a card: Draw a card.

{1}{B}, {T}, Sacrifice another creature: Draw X cards, where X is that creature's power. Choose a Background (You can have a Background as a second commander.)

Equipped creature gets +1/-1. Whenever equipped creature dies, draw two cards. Equip {1}

Sacrifice a creature: Add {C}{C}.

When Dockside Extortionist enters the battlefield, create X Treasure tokens, where X is the number of artifacts and enchantments your opponents control. (Treasure tokens are artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")

Whenever another creature you control dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Sacrifice a Goblin: Add {R}.

Flying Battle Squadron's power and toughness are each equal to the number of creatures you control.

{R}: Goblin Balloon Brigade gains flying until end of turn.

Flying Goblin Glider can't block.

Flying (This creature can't be blocked except by creatures with flying or reach.)

Flying Kyren Glider can't block.

Champion a Goblin (When this enters the battlefield, sacrifice it unless you exile another Goblin you control. When this leaves the battlefield, that card returns to the battlefield.) Whenever a Goblin you control deals combat damage to a player, you may create a 1/1 black Goblin Rogue creature token.

{T}: Create X 1/1 red Goblin creature tokens, where X is the number of Goblins you control.

Whenever Krenko, Tin Street Kingpin attacks, put a +1/+1 counter on it, then create a number of 1/1 red Goblin creature tokens equal to Krenko's power.

Whenever Pashalik Mons or another Goblin you control dies, Pashalik Mons deals 1 damage to any target. {3}{R}, Sacrifice a Goblin: Create two 1/1 red Goblin creature tokens.

When Siege-Gang Commander enters the battlefield, create three 1/1 red Goblin creature tokens. {1}{R}, Sacrifice a Goblin: Siege-Gang Commander deals 2 damage to any target.

Haste (This creature can attack and {T} as soon as it comes under your control.) Other Goblin creatures you control get +1/+1 and have haste.

Other Goblins get +1/+1 and have mountainwalk.

{T}, Sacrifice a Goblin: Goblin creatures get +2/+0 until end of turn.

Other Goblins you control get +1/+1. Sacrifice a Goblin: Destroy target artifact.

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)

Commander creatures you own have "Whenever this creature becomes tapped, it and other creatures you control that share a creature type with it each get +2/+0 and gain undying until end of turn." (When a creature with undying dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Other Goblins you control get +1/+1. {R}, {T}: Hobgoblin Bandit Lord deals damage equal to the number of Goblins that entered the battlefield under your control this turn to any target.

When Boggart Harbinger enters the battlefield, you may search your library for a Goblin card, reveal it, then shuffle and put that card on top.

Play with the top card of your library revealed. You may cast Goblin spells from the top of your library. As long as the top card of your library is a Goblin card, Conspicuous Snoop has all activated abilities of that card.

Whenever a creature you control dies, put two eyeball counters on Jar of Eyeballs. {3}, {T}, Remove all eyeball counters from Jar of Eyeballs: Look at the top X cards of your library, where X is the number of eyeball counters removed this way. Put one of them into your hand and the rest on the bottom of your library in any order.

Haste {T}: Create a token that's a copy of target nonlegendary creature you control, except it has haste. Sacrifice it at the beginning of the next end step.

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

When Crystal Grotto enters the battlefield, scry 1. {T}: Add {C}. {1}, {T}: Add one mana of any color.

{T}: Add {C}. {2}, {T}: Scry 1, then you may reveal the top card of your library. If a basic land card is revealed this way, put it onto the battlefield tapped. Activate only if an opponent controls at least two more lands than you.

Mortuary Mire enters the battlefield tapped. When Mortuary Mire enters the battlefield, you may put target creature card from your graveyard on top of your library. {T}: Add {B}.

({T}: Add {R}.)

Myriad Landscape enters the battlefield tapped. {T}: Add {C}. {2}, {T}, Sacrifice Myriad Landscape: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

Path of Ancestry enters the battlefield tapped. {T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

({T}: Add {B}.)

Temple of Malice enters the battlefield tapped. When Temple of Malice enters the battlefield, scry 1. {T}: Add {B} or {R}.

{T}: Add {C}{C}. Activate only if you control five or more lands.

({T}: Add {B}.) Witch's Cottage enters the battlefield tapped unless you control three or more other Swamps. When Witch's Cottage enters the battlefield untapped, you may put target creature card from your graveyard on top of your library.

Put any number of target creature cards from your graveyard on top of your library. Draw a card at the beginning of the next turn's upkeep.

{2}: Put target card from your graveyard on the bottom of your library.

Put any number of target creature cards from your graveyard on top of your library. Draw a card.

Put any number of target creature cards from your graveyard on top of your library. Draw a card.

Put any number of target creature cards from your graveyard on top of your library. Draw a card.

{2}: Put the top card of your graveyard on the bottom of your library.

At the beginning of your upkeep, if there are four or more creature cards in your graveyard, return a creature card at random from your graveyard to your hand. Choose a Background (You can have a Background as a second commander.)

First strike When Goblin Chainwhirler enters the battlefield, it deals 1 damage to each opponent and each creature and planeswalker they control.

{1}, Sacrifice Goblin Cratermaker: Choose one — • Goblin Cratermaker deals 2 damage to target creature. • Destroy target colorless nonland permanent.

{R}, {T}: Destroy target artifact. That artifact deals damage equal to its mana value to Goblin Tinkerer.

{X}{R}, {T}, Discard a card: Destroy all artifacts with mana value X or less.

Flash When Munitions Expert enters the battlefield, you may have it deal damage to target creature or planeswalker equal to the number of Goblins you control.

{1}{R}{R}: Spikeshot Elder deals damage equal to its power to any target.

{T}: Add one mana of any color.

{B}, {T}, Discard a card: Add {B}{B}{B}.

When Bronze Walrus enters the battlefield, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.) {T}: Add one mana of any color.

{3}, Sacrifice Burnished Hart: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

{T}: Add {R}.

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

{T}: Add one mana of any color. {4}, {T}: Look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped. If you don't put the card onto the battlefield, you may put it on the bottom of your library.

{T}: Add {B}.

At the beginning of your end step, create a Treasure token for each creature that died this turn. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Flying {T}: Add one mana of any color.

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

Red creatures you control have first strike.

When Dreadhound enters the battlefield, mill three cards. (Put the top three cards of your library into your graveyard.) Whenever a creature dies or a creature card is put into a graveyard from a library, each opponent loses 1 life.

Whenever Goblin General attacks, Goblin creatures you control get +1/+1 until end of turn.

When Goblin Goliath enters the battlefield, create a number of 1/1 red Goblin creature tokens equal to the number of opponents you have. {3}{R}, {T}: If a source you control would deal damage to an opponent this turn, it deals double that damage to that player instead.

Whenever Goblin Grenadiers attacks and isn't blocked, you may sacrifice it. If you do, destroy target creature and target land.

When Goblin Recruiter enters the battlefield, search your library for any number of Goblin cards, reveal them, then shuffle and put those cards on top in any order.

Goblin Sharpshooter doesn't untap during your untap step. Whenever a creature dies, untap Goblin Sharpshooter. {T}: Goblin Sharpshooter deals 1 damage to any target.

{R}, {T}, Sacrifice a Goblin: Red creatures get +1/+1 until end of turn.

Whenever Goblin Vandal attacks and isn't blocked, you may pay {R}. If you do, destroy target artifact defending player controls and Goblin Vandal assigns no combat damage this turn.

{B}: Put target creature card from your graveyard on top of your library.

Whenever you cast a spell, put the cards in your hand on the bottom of your library in any order, then draw that many cards.

Whenever a creature is put into your graveyard from the battlefield, put that card on top of your library.

When Muxus, Goblin Grandee enters the battlefield, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order. Whenever Muxus attacks, it gets +1/+1 until end of turn for each other Goblin you control.

Other Goblins you control get +1/+1. Whenever Rundvelt Hordemaster or another Goblin you control dies, exile the top card of your library. If it's a Goblin creature card, you may cast that card until the end of your next turn.