This spell can't be countered.

At the beginning of each upkeep, create a 3/3 blue Serpent creature token named Koma's Coil.

Sacrifice another Serpent: Choose one —

• Tap target permanent. Its activated abilities can't be activated this turn.

• Koma, Cosmos Serpent gains indestructible until end of turn.

You may look at the top card of your library any time.

You may cast Dragon spells from the top of your library.

When you cast this spell, draw four cards.

Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents.)

When Kozilek, Butcher of Truth is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.

Whenever you cast an instant or sorcery spell, flip a coin. If you lose the flip, return that spell to its owner's hand. If you win the flip, copy that spell, and you may choose new targets for the copy.

Partner (You can have two commanders if both have partner.)

Flying

Whenever you cast your second spell each turn, put a +1/+1 counter on Kraum, Violent Cacophony and draw a card.

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

Indestructible

As long as your devotion to green and blue is less than seven, Kruphix isn't a creature.

You have no maximum hand size.

If you would lose unspent mana, that mana becomes colorless instead.

Tap another untapped Merfolk you control: Kumena, Tyrant of Orazca can't be blocked this turn.

Tap three untapped Merfolk you control: Draw a card.

Tap five untapped Merfolk you control: Put a +1/+1 counter on each Merfolk you control.

Kurbis, Harvest Celebrant enters the battlefield with a number of +1/+1 counters on it equal to the amount of mana spent to cast it.

Remove a +1/+1 counter from Kurbis: Prevent all damage that would be dealt this turn to another target creature with a +1/+1 counter on it.

: Add for each card you've drawn this turn.

Partner (You can have two commanders if both have partner.)

: Return Lady Sun and another target creature to their owners' hands. Activate only during your turn, before attackers are declared.

Haste

Whenever Laelia, the Blade Reforged attacks, exile the top card of your library. You may play that card this turn.

Whenever one or more cards are put into exile from your library and/or your graveyard, put a +1/+1 counter on Laelia.

, , Discard two cards: Latulla, Keldon Overseer deals X damage to any target.

Whenever an opponent draws a card except the first one they draw in each of their draw steps, put a +1/+1 counter on Leela, Sevateem Warrior.

Doctor's companion (You can have two commanders if the other is the Doctor.)

Reach

Whenever you scry, if Legolas, Counter of Kills is tapped, you may untap it. Do this only once each turn.

Whenever a creature an opponent controls dies, put a +1/+1 counter on Legolas.

Flash

Flying

You may cast colorless spells and artifact spells as though they had flash.

Whenever you cast a spell, if the amount of mana spent to cast that spell is greater than Liberator, Urza's Battlethopter's power, put a +1/+1 counter on Liberator.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Whenever you cast a multicolored instant or sorcery spell from your hand, exile that spell instead of putting it into your graveyard as it resolves. If you do, it becomes plotted. (You may cast it as a sorcery on a later turn without paying its mana cost.)

, : Return target creature with mana value X to its owner's hand.

Grandeur — Discard another card named Linessa, Zephyr Mage: Target player returns a creature they control to its owner's hand, then repeats this process for an artifact, an enchantment, and a land.

Whenever you cast a noncreature spell, target creature gets +X/+0 until end of turn, where X is that spell's mana value.

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

When Llawan, Cephalid Empress enters the battlefield, return all blue creatures your opponents control to their owners' hands.

Your opponents can't cast blue creature spells.

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Whenever one or more +1/+1 counters are put on Lonis, investigate that many times.

Whenever you sacrifice a Clue, put a +1/+1 counter on another target creature you control.

Whenever Lorthos, the Tidemaker attacks, you may pay . If you do, tap up to eight target permanents. Those permanents don't untap during their controllers' next untap steps.

Each creature that's a Barbarian, a Warrior, or a Berserker gets +2/+2 and has haste.

Haste; horsemanship (This creature can't be blocked except by creatures with horsemanship.)

: Draw a card. Activate only during your turn, before attackers are declared.

At the beginning of each player's end step, that player may draw a card if a player other than you lost life this turn.

Partner (You can have two commanders if both have partner.)

Companion — Each nonland card in your starting deck has a different name. (If this card is your chosen companion, you may put it into your hand from outside the game for as a sorcery.)

Flash

When Lutri, the Spellchaser enters the battlefield, if you cast it, copy target instant or sorcery spell you control. You may choose new targets for the copy.

Partner with Jenny Flint (When this creature enters the battlefield, target player may put Jenny Flint into their hand from their library, then shuffle.)

Madame Vastra must be blocked if able.

Whenever a creature dealt damage by Madame Vastra this turn dies, create a Clue token and a Food token.

: Goad target creature. Whenever that creature attacks one of your opponents this turn, you draw a card. (A goaded creature attacks each combat if able and attacks a player other than you if able, until your next turn.)

Whenever you commit a crime, create a tapped Treasure token. This ability triggers only once each turn. (Targeting opponents, anything they control, and/or cards in their graveyards is a crime.)

Sacrifice three Treasures: Create a 4/4 red Scorpion Dragon creature token with flying and haste. Activate only as a sorcery.

Spiritual Leader — At the beginning of combat on your turn, put a +1/+1 counter on target creature.

Psychic Stimulus — : Add . When you next cast a spell with in its mana cost or activate an ability with in its activation cost this turn, copy that spell or ability. You may choose new targets for the copy. (A copy of a permanent spell becomes a token.)

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 ", Sacrifice this artifact: Add one mana of any color.")

Partner (You can have two commanders if both have partner.)

: Switch each creature's power and toughness until end of turn.

Vigilance, trample

Whenever a creature you control deals combat damage to a player, draw a card if that creature has a +1/+1 counter on it. If it doesn't, put a +1/+1 counter on it.

Woman Who Walked the Earth — When Martha Jones enters the battlefield, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Whenever you sacrifice a Clue, Martha Jones and up to one other target creature can't be blocked this turn.

Doctor's companion (You can have two commanders if the other is the Doctor.)

Whenever another Elf enters the battlefield under your control, put a +1/+1 counter on Marwyn, the Nurturer.

: Add an amount of equal to Marwyn's power.

At the beginning of combat on your turn, put your choice of a +1/+1, first strike, vigilance, or menace counter on Me, the Immortal.

Counters remain on Me as it moves to any zone other than a player's hand or library.

You may cast Me from your graveyard by discarding two cards in addition to paying its other costs.

Melek, Reforged Researcher's power and toughness are each equal to twice the number of instant and sorcery cards in your graveyard.

The first instant or sorcery spell you cast each turn costs less to cast.

Flying

, Return a land you control to its owner's hand: Create a 1/1 blue Illusion creature token with flying.

Flying

Whenever Meneldor, Swift Savior deals combat damage to a player, exile up to one target creature you own, then return it to the battlefield under your control.

Tap an untapped nontoken artifact you control: Add .

Tap two untapped nontoken artifacts you control: Exile the top card of your library. You may play it this turn.

Migloz, Maze Crusher enters the battlefield with five oil counters on it.

, Remove an oil counter from Migloz: It gains vigilance and menace until end of turn.

, Remove two oil counters from Migloz: It gets +2/+2 until end of turn.

, Remove three oil counters from Migloz: Destroy target artifact or enchantment.

You may play an additional land on each of your turns.

, Return a land you control to its owner's hand: Target creature gains trample until end of turn.

First strike, forestwalk, vigilance (This creature deals combat damage before creatures without first strike, it can't be blocked as long as defending player controls a Forest, and attacking doesn't cause this creature to tap.)

Mistform Ultimus is every creature type (even if this card isn't on the battlefield).

Flying

Whenever you cast a spell from anywhere other than your hand, you may pay . If you do, copy that spell and you may choose new targets for the copy. If the copy is a permanent spell, it gains haste and "At the beginning of your end step, sacrifice this permanent." (A copy of a permanent spell becomes a token.)

Whenever you cast a green creature spell, you may search your library for a creature card, reveal it, then shuffle and put that card on top.

Whenever you cast a blue creature spell, reveal the top card of your library. If it's a creature card, put that card into your hand.

Each creature you control gets +1/+0 for each time it has attacked this turn.

Landfall — Whenever a land enters the battlefield under your control, if it's your main phase, there's an additional combat phase after this phase. At the beginning of that combat, untap all creatures you control.

Changeling (This card is every creature type.)

As Morophon, the Boundless enters the battlefield, choose a creature type.

Spells of the chosen type you cast cost less to cast. This effect reduces only the amount of colored mana you pay.

Other creatures you control of the chosen type get +1/+1.

Shroud (This creature can't be the target of spells or abilities.)

Multani, Maro-Sorcerer's power and toughness are each equal to the total number of cards in all players' hands.