Indestructible

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

Whenever you cast a creature spell, you may search your library for a Forest or Plains card, put it onto the battlefield tapped, then shuffle.

Haste

Whenever Kardum, Patron of Flames attacks, put a flame counter on it, then seek a card with mana value equal to the number of flame counters on it and exile that card face down.

When Kardum dies, put all cards you own exiled with it into your hand. At the beginning of the end step of your next turn, discard those cards.

When Karfell Kennel-Master enters the battlefield, up to two target creatures each get +1/+0 and gain indestructible until end of turn. (Damage and effects that say "destroy" don't destroy them.)

Whenever you gain life, put two +1/+1 counters on Karlov of the Ghost Council.

, Remove six +1/+1 counters from Karlov of the Ghost Council: Exile target creature.

+1: Reveal the top two cards of your library. An opponent chooses one of them. Put that card into your hand and exile the other with a silver counter on it.

−1: Put a card you own with a silver counter on it from exile into your hand.

−2: Create a 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control."

: Add .

: Add or . Karplusan Forest deals 1 damage to you.

Your opponents and permanents your opponents control with hexproof can be the targets of spells and abilities you control as though they didn't have hexproof.

−3: Exile target creature.

Kazandu Refuge enters the battlefield tapped.

When Kazandu Refuge enters the battlefield, you gain 1 life.

: Add or .

Kazuul's Cliffs enters the battlefield tapped.

: Add .

Whenever a commander you control deals combat damage to an opponent, it deals that much damage to each other opponent.

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

Whenever one or more non-Human creatures you control deal combat damage to a player, draw a card.

: Keeper of Kookus gains protection from red until end of turn.

First strike, haste

Symphony of Pain — Whenever you cast a spell from anywhere other than your hand, Keeper of Secrets deals damage equal to that spell's mana value to target opponent.

, : Choose target opponent who controls more creatures than you do as you activate this ability. Create a 2/2 green Beast creature token.

, : Choose target opponent who has at least two fewer creature cards in their graveyard than you do as you activate this ability. Destroy target nonblack creature that player controls.

You may look at face-down creatures you don't control any time.

, : Choose target opponent who has at least two more cards in hand than you do as you activate this ability. Draw a card.

As Keeper of the Sacred Word enters the battlefield, choose a word.

Whenever an opponent says the chosen word, Keeper of the Sacred Word gets +3/+3 until end of turn.

Gain control of target artifact, creature, or enchantment. Lands you control don't untap during your next untap step.

When Keldon Firebombers enters the battlefield, each player sacrifices all lands they control except for three.

Whenever a commander you control attacks, put a +1/+1 counter on it.

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

Menace

Whenever you sacrifice a creature, you may pay . If you do, draw a card. ( can be paid with either or .)

, Sacrifice a creature: Kels, Fight Fixer gains indestructible until end of turn.

Homunculus Servant — When Kenku Artificer enters the battlefield, put three +1/+1 counters on up to one target noncreature artifact. That artifact becomes a 0/0 Homunculus artifact creature with flying.

Double strike; bushido 2 (Whenever this creature blocks or becomes blocked, it gets +2/+2 until end of turn.)

, Sacrifice three other artifacts and/or creatures: Look at the top three cards of your library. Put two of them into your hand and the other into your graveyard.

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

Whenever Kessig Forgemaster blocks or becomes blocked by a creature, Kessig Forgemaster deals 1 damage to that creature.

At the beginning of each upkeep, if no spells were cast last turn, transform Kessig Forgemaster.

: Add .

, : Target creature gets +X/+0 and gains trample until end of turn.

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

Flying, haste

Knights your team controls have flying and haste.

: Exile the top card of your library. If it's a land card, put it into your hand. Otherwise, put a study counter on it.

: Create a 0/0 green and blue Fractal creature token. Put a +1/+1 counter on it for each different mana value among nonland cards you own in exile with study counters on them.

, : Target creature deals damage to itself equal to its power.

Target creature gets +1/+0 and gains first strike until end of turn.

Flying

Whenever King of the Oathbreakers or another Spirit you control becomes the target of a spell, it phases out. (Treat it and anything attached to it as though they don't exist until your next turn.)

Whenever King of the Oathbreakers or another Spirit you control phases in, create a tapped 1/1 white Spirit creature token with flying.

Flying

When Kingfisher dies, draw a card.

+1: Untap up to one target creature and up to one target land.

−2: Reveal the top four cards of your library. You may put a creature card and/or a land card from among them into your hand. Put the rest into your graveyard.

−8: You get an emblem with "Whenever a creature enters the battlefield under your control, you may have it fight target creature." Then create three 8/8 blue Octopus creature tokens.

+1: Conjure a card named Kraken Hatchling into your hand.

+1: Untap target creature or land. Prevent all damage that would be dealt to and dealt by that permanent until your next turn.

−3: You may sacrifice a Kraken. If you do, create an 8/8 blue Kraken creature token.

Kird Chieftain gets +1/+1 as long as you control a Forest.

: Target creature gets +2/+2 and gains trample until end of turn. (It can deal excess combat damage to the player or planeswalker it's attacking.)

Target player gains 7 life and draws two cards.

Flying

When Kitesail Freebooter enters the battlefield, target opponent reveals their hand. You choose a noncreature, nonland card from it. Exile that card until Kitesail Freebooter leaves the battlefield.

Kiyomaro, First to Stand's power and toughness are each equal to the number of cards in your hand.

As long as you have four or more cards in hand, Kiyomaro has vigilance.

Whenever Kiyomaro deals damage, if you have seven or more cards in hand, you gain 7 life.

Indestructible

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

At the beginning of your precombat main phase, exile target card from a graveyard. If it was a land card, add or . Otherwise, you gain 2 life and Klothys deals 2 damage to each opponent.

Just a second (As long as this spell is on the stack, players can't move permanents.)

One at a time, throw ten cards you own from outside the game onto the playing area from a distance of at least three feet (about one meter). For each of those cards, Knife and Death deals 1 damage to each creature or planeswalker you don't control that card is touching. You gain life equal to the damage dealt this way.

Level up (: Put a level counter on this. Level up only as a sorcery.)

LEVEL 1-3

2/3

Flying

LEVEL 4+

4/4

Flying, vigilance

First strike

If you would gain life, you gain that much life plus 1 instead.

: Knight of Dawn's Light gets +1/+1 until end of turn.

: Destroy target creature blocking Knight of Dusk.

Protection from black (This creature can't be blocked, targeted, dealt damage, or enchanted by anything black.)

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

Protection from white (This creature can't be blocked, targeted, dealt damage, or enchanted by anything white.)

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

First strike

Lifelink (Damage dealt by this creature also causes you to gain that much life.)