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.

First strike, haste

Whenever Kellogg, Dangerous Mind attacks, create a Treasure token.

Sacrifice five Treasures: Gain control of target creature for as long as you control Kellogg. Activate only as a sorcery.

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.

: Target green creature gains first strike 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.

Vigilance

Kemba's Legion can block an additional creature each combat for each Equipment attached to Kemba's Legion.

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

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

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.)

Indestructible

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

Reveal the first card you draw on each of your turns. Whenever you reveal a land card this way, draw a card. Whenever you reveal a nonland card this way, Keranos deals 3 damage to any target.

, 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 Cagebreakers attacks, create a 2/2 green Wolf creature token that's tapped and attacking for each creature card in your graveyard.

Whenever you cast a noncreature spell, Kessig Flamebreather deals 1 damage to each opponent.

When Kessig Malcontents enters, it deals damage to target player or planeswalker equal to the number of Humans you control.

: Transform Kessig Prowler.

: Kessig Wolf gains first strike until end of turn.

Menace

, , Exile three cards from your graveyard: Create a 3/2 red Wolf creature token.

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.

First strike

At the beginning of your upkeep, if your opponents control no creatures, Kezzerdrix deals 4 damage to you.

Target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)

When Khalni Gem enters, return two lands you control to their owner's hand.

: Add two mana of any one color.

This spell costs less to cast for each green creature you control.

Trample

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.)

Trample

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

: Transform Khenra Spellspear. Activate only as a sorcery. ( can be paid with either or 2 life.)

Whenever a creature you control with toughness 4 or greater dies, each opponent loses 2 life and you gain 2 life.

, Sacrifice another creature: Put a +1/+1 counter on Kheru Bloodsucker.

At the beginning of your upkeep, you may pay . If you do, return a creature card at random from your graveyard to the battlefield. It gains flying, trample, and haste. Exile that card at the beginning of your next end step. If it would leave the battlefield, exile it instead of putting it anywhere else.

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

Haste

: Create a token that's a copy of target nonlegendary creature you control, except it has haste. Sacrifice it at the beginning of the next end step.

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.

Choose one or more —

• Destroy target artifact.

• Destroy target creature.

• Kill Maim Burn deals 3 damage to target player.

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.