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

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

If Kavu Primarch was kicked, it enters with four +1/+1 counters on it.

+1: Put a ghostform counter on up to one target nontoken creature. It gains "When this creature dies or is put into exile, return it to its owner's hand and create a 1/1 white Spirit creature token with flying."

−3: Exile target nonland permanent.

−7: You get an emblem with "At the beginning of your upkeep, you may cast a legendary spell from your hand, from your graveyard, or from among cards you own in exile without paying its mana cost."

0: Exile Kaya, Ghost Assassin or up to one target creature. Return that card to the battlefield under its owner's control at the beginning of your next upkeep. You lose 2 life.

−1: Each opponent loses 2 life and you gain 2 life.

−2: Each opponent discards a card and you draw a card.

Whenever one or more creatures you control and/or creature cards in your graveyard are put into exile, you may choose a creature card from among them. Until end of turn, target token you control becomes a copy of it, except it has flying.

+2: Surveil 2, then exile a card from a graveyard.

+1: Create a 1/1 white and black Spirit creature token with flying.

−2: Exile target creature you control. For each other player, exile up to one target creature that player controls.

, : Look at the top card of your library, then exile it face down. (You may look at it any time.)

: Until end of turn, you may play cards you own exiled with Kayla's Music Box.

Flying, haste

: The next instant or sorcery spell you cast this turn costs less to cast, where X is the number of Wizards you control as this ability resolves.

Whenever a creature an opponent controls attacks, if you're the defending player, create a 3/3 red Ogre creature token unless that creature's controller pays .

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.)

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.)

: Target creature gains flying until end of turn.

Flying

When Keening Banshee enters, target creature gets -2/-2 until end of turn.

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.

, : 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.

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.

Flying

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

Haste

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

When Keldon Champion enters, it deals 3 damage to target player or planeswalker.

First strike

Suspend 4— (Rather than cast this card from your hand, you may pay and exile it with four time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. It has haste.)

: Add .

, , Sacrifice a creature: Keldon Necropolis deals 2 damage to any target.

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.)

When Kellan Joins Up enters, you may exile a nonland card with mana value 3 or less from your hand. If you do, it becomes plotted. (You may cast it as a sorcery on a later turn without paying its mana cost.)

Whenever a legendary creature you control enters, put a +1/+1 counter on each creature you control.

Flying, vigilance

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

Double strike

Other creatures you control get +1/+0 for each Aura and Equipment attached to Kellan, the Fae-Blooded.

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.)

Kellan's Lightblades deals 3 damage to target attacking or blocking creature. If this spell was bargained, destroy that creature instead.

: Untap another target permanent you control.

: Tap target permanent. Activate only if you control eight or more lands.

Vigilance, haste

Kelsien, the Plague gets +1/+1 for each experience counter you have.

: Kelsien deals 1 damage to target creature you don't control. When that creature dies this turn, you get an experience counter.

Whenever Kemba, Kha Enduring or another Cat you control enters, attach up to one target Equipment you control to that creature.

Equipped creatures you control get +1/+1.

: Create a 2/2 white Cat creature token.

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.)

, 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.

First strike

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

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 .

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.

All lands are Islands in addition to their other types.

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

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.