When Kederekt Leviathan enters, return all other nonland permanents to their owners' hands.

Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

At the beginning of your upkeep, you and target opponent each reveal the top card of your library. You each lose life equal to the mana value of the card revealed by the other player. You each put the card you revealed into your hand.

You have hexproof. (You can't be the target of spells or abilities your opponents control.)

Each opponent can't venture into the dungeon more than once each turn.

Sacrifice Keening Apparition: Destroy target enchantment.

When Keensight Mentor enters, put a vigilance counter on target non-Human creature you control.

, : Put a +1/+1 counter on each creature you control with vigilance.

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 more life than you do as you activate this ability. Keeper of the Flame deals 2 damage to that player.

, : Choose target opponent who has more life than you do as you activate this ability. You gain 3 life.

Flying

, Tap two untapped Birds you control: Return target permanent to its owner's hand.

Whenever Keeper of Tresserhorn attacks and isn't blocked, it assigns no combat damage this turn and defending player loses 2 life.

Flying, indestructible

Kefnet the Mindful can't attack or block unless you have seven or more cards in hand.

: Draw a card, then you may return a land you control to its owner's hand.

Blue creature spells you cast cost less to cast.

Whenever you cast a creature spell, target creature an opponent controls doesn't untap during its controller's next untap step.

Flying

When Keiga, the Tide Star dies, gain control of target creature.

Trample

Keldon Battlewagon can't block.

When Keldon Battlewagon attacks, sacrifice it at end of combat.

Tap an untapped creature you control: Keldon Battlewagon gets +X/+0 until end of turn, where X is the power of the creature tapped this way.

Keldon Megaliths enters tapped.

: Add .

Hellbent — , : Keldon Megaliths deals 1 damage to any target. Activate only if you have no cards in hand.

At the beginning of each player's end step, if no creatures attacked this turn, that player sacrifices a creature they controlled since the beginning of the turn.

Flying

Flying, vigilance

Whenever Kellan, Inquisitive Prodigy attacks, destroy up to one target artifact. If you controlled that permanent, draw a card.

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.

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.