When Inside Source enters the battlefield, create a 2/2 white and blue Detective creature token.

, : Target Detective you control gets +2/+0 and gains vigilance until end of turn. Activate only as a sorcery.

Damage can't be prevented this turn. If a source you control would deal damage this turn, it deals double that damage instead.

Devour Intellect — When Intellect Devourer enters the battlefield, each opponent exiles a card from their hand until Intellect Devourer leaves the battlefield.

Body Thief — You may play lands and cast spells from among cards exiled with Intellect Devourer. If you cast a spell this way, you may spend mana as though it were mana of any color to cast it.

(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)

When Invasion of Muraganda enters the battlefield, put a +1/+1 counter on target creature you control. Then that creature fights up to one target creature you don't control.

Investigator's Journal enters the battlefield with a number of suspect counters on it equal to the greatest number of creatures a player controls.

, , Remove a suspect counter from Investigator's Journal: Draw a card.

, Sacrifice Investigator's Journal: Draw a card.

Enchant creature

Enchanted creature gets -0/-1.

Enchanted creature can't block creatures with power equal to or greater than the enchanted creature's toughness.

Whenever you draw a card, you may have target player mill a card.

Flying

When Jeleva, Nephalia's Scourge enters the battlefield, each player exiles the top X cards of their library, where X is the amount of mana spent to cast Jeleva.

Whenever Jeleva attacks, you may cast an instant or sorcery spell from among cards exiled with Jeleva without paying its mana cost.

Flash

At the beginning of your end step, draw seven cards.

Each opponent's maximum hand size is reduced by seven.

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

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)

Search your library and graveyard for a basic land card and a card named Jiang Yanggu, reveal them, put them into your hand, then shuffle.

Create X Map tokens, where X is one plus the number of opponents who control an artifact. (Then exile this card. You may cast the creature later from exile.)

When Journey to Nowhere enters the battlefield, exile target creature.

When Journey to Nowhere leaves the battlefield, return the exiled card to the battlefield under its owner's control.

At the beginning of your upkeep, exile the top four cards of your library, then roll a d20.

1–9 | You may put a land card from among those cards onto the battlefield.

10–19 | Create a 2/2 green Wolf creature token, then put a +1/+1 counter on it for each creature card among those cards.

20 | Put all permanent cards exiled with Journey to the Lost City onto the battlefield, then sacrifice it.

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

Whenever you cast an instant or sorcery spell, choose one —

• That spell gains deathtouch and lifelink.

• Create a 2/2 red Imp creature token with "When this creature dies, it deals 2 damage to each opponent."

Lifelink

Enchantment spells you cast cost less to cast.

Whenever Jungle Wurm becomes blocked, it gets -1/-1 until end of turn for each creature blocking it beyond the first.

Whenever you sacrifice a permanent, put a +1/+1 counter on Juri, Master of the Revue.

When Juri dies, it deals damage equal to its power to any target.

At the beginning of your end step, goad each creature your opponents control that's enchanted by an Aura you control. Put a +1/+1 counter on Kaima, the Fractured Calm for each creature goaded this way. (Until your next turn, the goaded creatures attack each combat if able and attack a player other than you if able.)

Whenever Kami of Mourning enters the battlefield, target creature you control or creature card in your graveyard perpetually gains "Whenever a creature you control with greater mana value than this card dies, return this card from your graveyard to the battlefield tapped."

When Kardur, Doomscourge enters the battlefield, until your next turn, creatures your opponents control attack each combat if able and attack a player other than you if able.

Whenever an attacking creature dies, each opponent loses 1 life and you gain 1 life.

Whenever you attack, if it's the first combat phase of the turn, untap all attacking creatures. They gain first strike until end of turn. After this phase, there is an additional combat phase.

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

Cumulative upkeep—Flip a coin. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Whenever you win a coin flip, Karplusan Minotaur deals 1 damage to any target.

Whenever you lose a coin flip, Karplusan Minotaur deals 1 damage to any target of an opponent's choice.

Flying

Whenever a creature an opponent controls is dealt damage, put a +1/+1 counter on Kazarov, Sengir Pureblood.

: Kazarov deals 2 damage to target creature.

Whenever Kellan, Daring Traveler attacks, reveal the top card of your library. If it's a creature card with mana value 3 or less, put it into your hand. Otherwise, you may put it into your graveyard.

When Kemuri-Onna enters the battlefield, target player discards a card.

Whenever you cast a Spirit or Arcane spell, you may return Kemuri-Onna to its owner's hand.

Whenever Kessig Naturalist attacks, add or . Until end of turn, you don't lose this mana as steps and phases end.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Choose one or more —

• Destroy target artifact.

• Destroy target creature.

• Kill Maim Burn deals 3 damage to target player.

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Kinetic Augur's power is equal to the number of instant and sorcery cards in your graveyard.

When Kinetic Augur enters the battlefield, discard up to two cards, then draw that many cards.

When Kinsbaile Courier enters the battlefield, put a +1/+1 counter on target creature.

Encore (, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

Whenever an attacking Kithkin or Elf is put into your graveyard from the battlefield, you may draw a card.

Flying

Whenever a Dragon you control attacks, creatures you control get +1/+0 until end of turn.

Dash (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

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

Whenever Krydle of Baldur's Gate deals combat damage to a player, that player loses 1 life and mills a card, then you gain 1 life and scry 1.

Whenever you attack, you may pay . If you do, target creature can't be blocked this turn.

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.

Whenever you activate an ability of an artifact, if it isn't a mana ability, you may pay . If you do, copy that ability. You may choose new targets for the copy.

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)

: Regenerate Kuro's Taken.

Whenever Labyrinth Minotaur blocks a creature, that creature doesn't untap during its controller's next untap step.

Whenever you cast a noncreature spell, Lambholt Raconteur deals 1 damage to each opponent.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

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

First strike

, Sacrifice an artifact or creature: Goad target creature. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)

As Lavabrink Venturer enters the battlefield, choose odd or even. (Zero is even.)

Lavabrink Venturer has protection from each mana value of the chosen quality.

Lifelink

Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.)

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

Let the Galaxy Burn deals X plus 2 damage to each creature that didn't enter the battlefield this turn.

Lhurgoyf's power is equal to the number of creature cards in all graveyards and its toughness is equal to that number plus 1.

Target player gains 4 life, then gains 4 life for each card named Life Burst in each graveyard.

Lightning Surge deals 4 damage to any target.

Threshold — If seven or more cards are in your graveyard, instead Lightning Surge deals 6 damage to that permanent or player and the damage can't be prevented.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Destroy target creature. Add .

Exploit (When this creature enters the battlefield, you may sacrifice a creature.)

Menace

When Loathsome Curator exploits a creature, destroy target creature you don't control with mana value 3 or less.

Other Zombies you control get +1/+1.

, : All Zombies gain menace until end of turn.