You may have Sakashima enter as a copy of another creature you control, except it has Sakashima's other abilities. The "legend rule" doesn't apply to permanents you control. Partner (You can have two commanders if both have partner.)

Equipped creature has myriad. (Whenever it attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.) Equip {4}

You may have this creature enter as a copy of any creature on the battlefield.

Soulbond (You may pair this creature with another unpaired creature when either enters. They remain paired for as long as you control both of them.) As long as Deadeye Navigator is paired with another creature, each of those creatures has "{1}{U}: Exile this creature, then return it to the battlefield under your control."

Avoidance — Whenever you cast a noncreature spell, exile up to one target nonland permanent you control, then return that card to the battlefield under its owner's control.

Exile up to two target creatures you control, then return those cards to the battlefield under their owner's control. Draw a card.

Create a token that's a copy of target creature you control, except the token has flying and it isn't legendary.

Flying {T}: Draw a card, then discard a card. {X}: This creature becomes a copy of target creature card in your graveyard with mana value X, except it has flying and this ability. Activate only as a sorcery.

Enchant creature Whenever enchanted creature attacks, you may create a token that's a copy of that creature. Exile that token at end of combat.

Flying Whenever another nontoken creature you control dies, you may exile it. If you do, create a token that's a copy of that creature, except it's 1/1 and it's a Nightmare in addition to its other types.

You may have this creature enter as a copy of any creature on the battlefield, except it's an Illusion in addition to its other types and it has "When this creature becomes the target of a spell or ability, sacrifice it."

({U/P} can be paid with either {U} or 2 life.) You may have this creature enter as a copy of any artifact or creature on the battlefield, except it's an artifact in addition to its other types.

Kicker {5} (You may pay an additional {5} as you cast this spell.) Create a token that's a copy of target creature. If this spell was kicked, create five of those tokens instead.

Flash You may have this creature enter as a copy of any creature on the battlefield.

You may have this creature enter as a copy of any creature on the battlefield, except it enters with a shield counter on it if you control that creature. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)

Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep. You draw a card at the beginning of the next turn's upkeep.

Flying Whenever this creature enters or attacks, target opponent sacrifices a creature or planeswalker of their choice, discards a card, and loses 3 life. You draw a card and gain 3 life.

Counter target noncreature spell. Its controller loses 2 life.

Destroy target nonblack creature.

Choose one — • Counter target spell with mana value less than or equal to the number of cards in its controller's graveyard. • Destroy target creature with mana value less than or equal to the number of cards in its controller's graveyard.

Choose odd or even. Exile each creature with mana value of the chosen quality. (Zero is even.)

Destroy target nonartifact creature.

When this creature enters, creatures your opponents control get -2/-2 until end of turn. Whenever a creature an opponent controls dies, that player loses 2 life.

Counter target instant or sorcery spell. Transmute {1}{U}{U} ({1}{U}{U}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

Counter target noncreature spell.

Hexproof Whenever a creature card is put into an opponent's graveyard from anywhere, you may have Lazav become a copy of that card, except its name is Lazav, Dimir Mastermind, it's legendary in addition to its other types, and it has hexproof and this ability.

If an artifact or creature entering causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.) Equip {0}

As an additional cost to cast this spell, sacrifice a creature. Search your library for a card, put that card into your hand, then shuffle.

Search your library for a card, put that card into your hand, then shuffle.

Flying, deathtouch When this creature enters, draw a card.

Flying Whenever an opponent draws a card, you may draw two cards.

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Look at the top seven cards of your library. Put two of them into your hand and the rest on the bottom of your library in any order.

Each player shuffles their hand and graveyard into their library, then draws seven cards. Flashback {2}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flash At the beginning of your end step, draw seven cards. Each opponent's maximum hand size is reduced by seven.

You draw two cards and you lose 2 life.

Menace Whenever Satoru and/or one or more other nontoken creatures you control enter, if none of them were cast or no mana was spent to cast them, draw a card.

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

Multikicker {2} (You may pay an additional {2} any number of times as you cast this spell.) This artifact enters with a charge counter on it for each time it was kicked. {T}: Add {C} for each charge counter on this artifact.

Creature spells you cast cost {2} less to cast. Creatures you control get -1/-1.

Black spells you cast cost {1} less to cast.

{T}: Add {B}.

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

Blue spells you cast cost {1} less to cast.

{T}: Add {U}.

When this creature enters, 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.

If you would draw a card while your library has no cards in it, you win the game instead. +1: Target player mills two cards. Draw a card. −8: Draw seven cards. Then if your library has no cards in it, you win the game.

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

This land enters tapped unless you control an Island or a Swamp. {T}: Add {U} or {B}.

{T}: Add one mana of any color that a land an opponent controls could produce.

({T}: Add {U}.)

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

Rivendell enters tapped unless you control a legendary creature. {T}: Add {U}. {1}{U}, {T}: Scry 2. Activate only if you control a legendary creature.

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

({T}: Add {B}.)

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

Return target creature card from your graveyard to the battlefield. Flashback—Sacrifice three creatures. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Each player puts a creature card from their graveyard onto the battlefield.

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

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

At the beginning of your upkeep, if you have four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand.

Return target nonlegendary creature card from your graveyard to the battlefield with a -1/-1 counter on it.