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.)

Reach (This creature can block creatures with flying.)

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

: Add .

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

Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)

Enchanted creature gets +4/+4.

Whenever an enchanted creature or enchantment creature you control attacks, draw a card.

Legendary spells you cast cost less to cast.

Exile two legendary cards from your graveyard: Until end of turn, each legendary card in your graveyard gains "You may play this card from your graveyard."

(: Add , , or .)

Ketria Triome enters tapped.

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

, Discard a card: Up to one target creature can't be blocked this turn.

Whenever Key to the City becomes untapped, you may pay . If you do, draw a card.

, , Sacrifice Keys to the House: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

, , Sacrifice Keys to the House: Lock or unlock a door of target Room you control. Activate only as a sorcery.

At the beginning of each end step, put a +1/+1 counter on Khabál Ghoul for each creature that died this turn.

Khalni Garden enters tapped.

When Khalni Garden enters, create a 0/1 green Plant creature token.

: Add .

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.

Khalni Territory enters tapped.

: Add .

Trample

Other creatures you control have trample.

Menace

You may exert Khenra Scrapper as it attacks. When you do, it gets +2/+0 until end of turn. (An exerted creature won't untap during your next untap step.)

: Add .

, : Create a 0/1 red Kobold creature token named Kobolds of Kher Keep.

Defender

, Sacrifice another creature: You gain life equal to the sacrificed creature's toughness.

Menace

Whenever Kheru Mind-Eater deals combat damage to a player, that player exiles a card from their hand face down.

You may look at cards exiled with Kheru Mind-Eater, and you may play lands and cast spells from among those cards.

All lands are Islands in addition to their other types.

Other Homarids, Camarids, Cephalids, Nautilids, and Merfolk you control get +1/+1.

For each player, choose friend or foe. Each friend discards all cards from their hand, then draws that many cards plus one. Khorvath's Fury deals damage to each foe equal to the number of cards in their hand.

: 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.

Put a +1/+1 counter on target creature. That creature gains haste until end of turn and can't be blocked by Walls this turn. Venture into the dungeon. (Enter the first room or advance to the next room.)

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

Lights — 2, 4, 6

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

Lights — 3, 4, 6

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

Lights — 4, 5, 6

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

Destroy target attacking creature.

Destroy target nonblack creature.

Gotcha — If an opponent says "kill" or "destroy," you may say "Gotcha" When you do, return Kill Destroy from your graveyard to your hand.

Killer deals 3 damage to target creature and each other creature that shares a creature type with it.

Whenever Killer Cosplay becomes attached to a creature, choose a creature card name with an identical mana cost. That creature becomes a copy of the card with the chosen name until Killer Cosplay becomes unattached from it.

Equip

When Killer Service enters, create a number of Food tokens equal to the number of opponents you have. (They're artifacts with ", , Sacrifice this artifact: You gain 3 life.")

At the beginning of your end step, you may pay and sacrifice a token. If you do, create a 4/4 green Rhino Warrior creature token.

When Killer's Mask enters, manifest dread, then attach Killer's Mask to that creature. (Look at the top two cards of your library. Put one onto the battlefield face down as a 2/2 creature and the other into your graveyard. Turn it face up any time for its mana cost if it's a creature card.)

Equipped creature has menace.

Equip

Destroy target creature with power X or less.

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.

Whenever you cast an instant or sorcery spell, Kiln Fiend gets +3/+0 until end of turn.

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.

Kindle deals X damage to any target, where X is 2 plus the number of cards named Kindle in all graveyards.

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

: Kindlespark Duo deals 1 damage to target opponent.

Whenever you cast a noncreature spell, untap Kindlespark Duo.

Spells you cast that refer to artifacts or Contraptions in their rules text cost less to cast.

As Kindred Boon enters, choose a creature type.

: Put a divinity counter on target creature you control of the chosen type.

Each creature you control with a divinity counter on it has indestructible.

Counter target spell. Seek a card with the same mana value as that spell.

Choose a creature type. Destroy all creatures that aren't of the chosen type.

, , Sacrifice Kindslaver: A person outside the game controls target player during that player's next turn. Neither player may advise that person until the end of that turn.

Flash

Other creatures you control get +1/+1.

: Put a +1/+1 counter on King Darien and create a 1/1 white Soldier creature token.

Sacrifice King Darien: Creature tokens you control gain hexproof and indestructible until end of turn.

Inspired — Whenever King Macar, the Gold-Cursed becomes untapped, you may exile target creature. If you do, create a Gold token. (It's an artifact with "Sacrifice this artifact: Add one mana of any color.")

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.

: Destroy target Djinn or Efreet.

Flying

Extort (Whenever you cast a spell, you may pay . If you do, each opponent loses 1 life and you gain that much life.)

Dinosaur spells you cast cost less to cast.