Whenever a player taps a Mountain, Forest, or Plains for mana, that player adds one mana of any type that land produced.

At the beginning of each opponent's end step, if that player controls more creatures than you, create a 1/1 white Soldier creature token.

At the beginning of each opponent's end step, if that player controls more lands than you, you may search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle.

: Put target artifact, instant, or sorcery card from a graveyard on the bottom of its owner's library.

, : 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, 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.

: Prevent the next 2 damage that would be dealt to target creature this turn.

, Sacrifice two lands: Destroy target land.

Enchant creature

: Regenerate enchanted creature.

: Enchanted creature gets +1/+0 until end of turn.

: Enchanted creature gains trample until end of turn.

Kicker (You may pay an additional as you cast this spell.)

When Keldon Strike Team enters, if it was kicked, create two 1/1 white Soldier creature tokens.

As long as Keldon Strike Team entered this turn, creatures you control have haste.

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

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

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.

: If Kellan is a Scout, it becomes a Human Faerie Detective and gains "Whenever Kellan deals combat damage to a player, exile the top card of your library. You may play that card this turn."

: If Kellan is a Detective, it becomes a 3/2 Human Faerie Rogue and gains double strike.

Flying, lifelink

Whenever you cast a spell from anywhere other than your hand, you may cast a permanent spell with equal or lesser mana value from your hand without paying its mana cost. If you don't, you may put a land card from your hand onto the battlefield.

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.

At the beginning of your upkeep, create a 2/2 white Cat creature token for each Equipment attached to Kemba, Kha Regent.

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

Enchant creature

When Kenrith's Transformation enters, draw a card.

Enchanted creature loses all abilities and is a green Elk creature with base power and toughness 3/3. (It loses all other card types and creature types.)

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

Companion — Your starting deck contains only cards with mana value 3 or greater and land cards. (If this card is your chosen companion, you may put it into your hand from outside the game for as a sorcery.)

When Keruga, the Macrosage enters, draw a card for each other permanent you control with mana value 3 or greater.

Flying

Once during each of your turns, you may cast an instant or sorcery spell from your graveyard. If a spell cast this way would be put into your graveyard, exile it instead.

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.

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.)

At the beginning of your end step, you may sacrifice another creature. If you do, reveal cards from the top of your library until you reveal a nonlegendary creature card with lesser mana value, put it onto the battlefield, then put the rest on the bottom of your library in a random order.

: Add , , or .

Cycling (, Discard this card: Draw a card.)

Key to the Archive enters the battlefield tapped.

When Key to the Archive enters the battlefield, draft a card from Key to the Archive's spellbook, then discard a card.

: Add two mana in any combination of colors.

Keymaster Rogue can't be blocked.

When Keymaster Rogue enters, return a creature you control to its owner's hand.

Landfall — Whenever a land you control enters, you may put a quest counter on Khalni Heart Expedition.

Remove three quest counters from Khalni Heart Expedition and sacrifice it: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

Berzerker — Khârn the Betrayer attacks or blocks each combat if able.

Sigil of Corruption — When you lose control of Khârn the Betrayer, draw two cards.

The Betrayer — If damage would be dealt to Khârn the Betrayer, prevent that damage and an opponent of your choice gains control of it.

Afflict 1 (Whenever this creature becomes blocked, defending player loses 1 life.)

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

When Kheru Spellsnatcher is turned face up, counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard. You may cast that card without paying its mana cost for as long as it remains exiled.

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

Flying, haste

Knights your team controls have flying and haste.

As long as Kianne's power is even, you may cast noncreature spells as though they had flash.

As long as Kianne's power is odd, you may cast creature spells as though they had flash.

Whenever you draw a card, put a +1/+1 counter on Kianne.

: Each player creates a colorless artifact token named Banana with ", Sacrifice this artifact: Add or . You gain 2 life."

Whenever an artifact an opponent controls is put into a graveyard from the battlefield, put a +1/+1 counter on each creature you control that's an Ape or a Monkey.

Whenever Kibo attacks, defending player sacrifices an artifact of their choice.

Visit — Creatures you control get +1/+0 until end of turn.

Lights — 2, 3, 6

Visit — Creatures you control get +1/+0 until end of turn.

Lights — 2, 5, 6

Visit — Creatures you control get +1/+0 until end of turn.

Lights — 3, 5, 6

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

, : Tap all other artifacts. They don't untap during their controllers' untap steps for as long as Kill Switch remains tapped.

At the beginning of your upkeep, reveal the top card of your library. If it's a creature card, put it onto the battlefield. That creature gains haste until end of turn. Sacrifice it at the beginning of the next end step.

Kill-Suit Cultist attacks each combat if able.

, Sacrifice Kill-Suit Cultist: The next time damage would be dealt to target creature this turn, destroy that creature instead.

Amplify 3 <I>(As this creature enters, put three +1/+1 counters on it for each Dragon card you reveal in your hand.)</I>

Flying

: Kilnmouth Dragon deals damage equal to the number of +1/+1 counters on it to any target.

Discard a card at random. If you do, Kindle the Carnage deals damage equal to that card's mana value to each creature. You may repeat this process any number of times.

Delirium — : Transform Kindly Stranger. Activate only if there are four or more card types among cards in your graveyard.

Flash

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I — Each player mills four cards. Then you may exile a creature or planeswalker card from each graveyard.

II, III — Until end of turn, you may cast spells from among cards exiled with King Narfi's Betrayal, and you may spend mana as though it were mana of any color to cast those spells.

Other Cats you control get +2/+1.