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.)

At the beginning of your first 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.)

As an additional cost to cast this spell, put a -1/-1 counter on a creature you control. Draw two cards.

You have no maximum hand size. At the beginning of your upkeep, if you have exactly thirteen cards in your hand, you win the game. {3}{U}: Draw a card.

Flying Sphinx spells you cast cost {2} less to cast. Whenever Unesh or another Sphinx you control enters, reveal the top four cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.

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

All Slivers have "Sacrifice this permanent: Add {B}{B}."

Burakos is also a Cleric, Rogue, Warrior, and Wizard. Whenever Burakos attacks, defending player loses X life and you create X Treasure tokens, where X is the number of creatures in your party. Choose a Background (You can have a Background as a second commander.)

You have no maximum hand size. {T}: Add one mana of any color.

Haste Goblin spells and Rogue spells you cast cost {1} less to cast.

Aberrant Tinkering — When this creature enters and at the beginning of your upkeep, each Horror you control gains all activated abilities of target artifact an opponent controls until end of turn. You may spend blue mana as though it were mana of any color to activate those abilities.

Flying Whenever one or more Pirates you control deal damage to your opponents, you create a Treasure token for each opponent dealt damage. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.") Partner (You can have two commanders if both have partner.)

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

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) Merfolk spells and Wizard spells you cast cost {1} less to cast.

This spell costs {1} less to cast for each creature in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.) Search your library for a card, put it into your hand, then shuffle. If you have a full party, you may cast a spell with mana value 4 or less from your hand without paying its mana cost.

{2}, {T}, Sacrifice a creature: Search your library for a creature card that shares a creature type with the sacrificed creature and has mana value equal to 1 plus that creature's mana value. Put that card onto the battlefield, then shuffle. Activate only as a sorcery.

Equipped creature gets +1/+1 and is every creature type. Equip {2}

Changeling (This card is every creature type.) This creature can't block and can't be blocked.

Changeling (This card is every creature type.) When this creature enters, you may return target creature card from your graveyard to your hand.

Flying When this creature enters, put target creature card from an opponent's graveyard onto the battlefield under your control. It gains haste. At the beginning of your next end step, exile it. Persist (When this creature 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.)

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

({T}: Add {U}.)

{T}: Add {C}. {1}: This land becomes a 2/2 creature with all creature types until end of turn. It's still a land.

{T}: Add {C}. {1}, {T}: Move a counter from target permanent you control onto another target permanent. Activate only as a sorcery.

This land enters 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.)

You have no maximum hand size. {T}: Add {C}.

{T}: Add {C}. {1}{U}, {T}: Return target Wizard you control to its owner's hand.

({T}: Add {U} or {B}.) This land enters tapped unless you control two or more basic lands.

({T}: Add {B}.)

Return all attacking creatures to their owner's hand.

Return up to three target artifacts and/or creatures to their owners' hands. You may cast a spell with mana value 4 or less from your hand without paying its mana cost.

Put X -1/-1 counters on each creature. Shuffle Black Sun's Zenith into its owner's library.

Destroy all creatures. Lands you control don't untap during your next untap step.

Counter target noncreature spell unless its controller pays {1} plus an additional {1} for each creature in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)

Undaunted (This spell costs {1} less to cast for each opponent.) Destroy two target creatures.

This spell costs {1} less to cast for each creature in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.) Destroy target creature or planeswalker.

As an additional cost to cast this spell, sacrifice X creatures. Destroy X target creatures.

As an additional cost to cast this spell, return a creature you control to its owner's hand. Counter target spell.

Flying {U}, Sacrifice this creature: Counter target noncreature spell. Persist (When this creature 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.)

Choose one — • Destroy target creature with no counters on it. • Remove up to three counters from target creature.

Choose one — • Counter target spell. • You may choose new targets for target spell. • Copy target instant or sorcery spell. You may choose new targets for the copy.

As an additional cost to cast this spell, put a -1/-1 counter on a creature you control. Destroy target creature.

Choose a creature type. If you control more creatures of that type than each other player, you gain control of all creatures of that type. (This effect lasts indefinitely.)

Choose two target creatures controlled by different players. Return those creatures to their owners' hands.

{T}, Sacrifice a creature: Put two +1/+1 counters on target creature. {T}, Remove a counter from a creature you control: Create a Treasure token. {T}, Sacrifice an artifact: Create a 2/1 white and black Inkling creature token with flying. {3}{B}: Untap Fain.

Changeling (This card is every creature type.) {1}{B}: This creature gets +1/+1 until end of turn.

Changeling (This card is every creature type.) When this creature enters, if you control three or more creatures that share a creature type, put a +1/+1 counter on this creature, then scry 1.

Changeling (This card is every creature type.) Flying {1}{U}: This creature gets +1/-1 until end of turn.

Changeling (This card is every creature type.) {B}: This creature gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy that creature.)

Changeling (This card is every creature type.) {1}{B}: Regenerate this creature.

Changeling (This card is every creature type.) {T}: Target creature gains all creature types until end of turn. {T}: Target creature loses all creature types until end of turn.

{T}: Choose any number of target creatures. Each of those creatures gains persist until end of turn. (When it 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.)

All Slivers have "Pay 2 life: Return this permanent to its owner's hand."

Equipped creature has lifelink if you control a Cleric, deathtouch if you control a Rogue, haste if you control a Warrior, and flying if you control a Wizard. As long as you have a full party, prevent all damage that would be dealt to equipped creature. Equip {2}

Whenever you draw your second card each turn, create a 2/2 blue Drake creature token with flying. Whenever you draw your fifth card each turn, Alandra and Drakes you control each get +X/+X until end of turn, where X is the number of cards in your hand.

Creatures you control are every creature type. The same is true for creature spells you control and creature cards you own that aren't on the battlefield. {3}, {T}: Create a 2/2 blue Shapeshifter creature token with changeling. (It is every creature type.)