Affinity for tokens (This spell costs less to cast for each token you control.)

Whenever a token enters the battlefield under your control, tap target nonland permanent an opponent controls. It doesn't untap during its controller's next untap step.

Creatures with power 1 or less don't untap during their controllers' untap steps.

Jwar Isle Refuge enters the battlefield tapped.

When Jwar Isle Refuge enters the battlefield, you gain 1 life.

: Add or .

Negative — As long as K-9, Mark I is untapped, other legendary creatures you control have ward .

Affirmative — , : Target legendary creature can't be blocked this turn.

Doctor's companion (You can have two commanders if the other is the Doctor.)

Kabira Crossroads enters the battlefield tapped.

When Kabira Crossroads enters the battlefield, you gain 2 life.

: Add .

Whenever you cast your first instant spell each turn, if Kalamax, the Stormsire is tapped, copy that spell. You may choose new targets for the copy.

Whenever you copy an instant spell, put a +1/+1 counter on Kalamax.

Whenever one or more tokens enter the battlefield under your opponents' control, for each of them, create a tapped token that's a copy of it. This ability triggers only once each turn.

Whenever one or more tokens enter the battlefield under your control, each opponent loses 1 life and you gain 1 life.

Whenever Kami of Mourning enters the battlefield, target creature you control or creature card in your graveyard perpetually gains "Whenever a creature you control with greater mana value than this card dies, return this card from your graveyard to the battlefield tapped."

Flying

Whenever Kapsho Kitefins or another creature enters the battlefield under your control, tap target creature an opponent controls.

Whenever you attack a player, tap target creature that player controls and goad it. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)

Whenever an opponent attacks another one of your opponents, you and the attacking player each draw a card and lose 1 life.

Gain control of target creature or Vehicle until end of turn. Untap it. It gains haste until end of turn.

You may cast a spell with mana value 2 or less from your hand without paying its mana cost.

+1: Create a tapped Powerstone token. (It's an artifact with ": Add . This mana can't be spent to cast a nonartifact spell.")

−1: Pay any amount of mana. Look at that many cards from the top of your library, then put one of those cards into your hand and the rest on the bottom of your library in a random order.

−7: You get an emblem with "Tap an untapped artifact you control: This emblem deals 1 damage to any target."

Haste

At the beginning of each player's upkeep, that player untaps Karona, False God and gains control of it.

Whenever Karona attacks, creatures of the creature type of your choice get +3/+3 until end of turn.

Tap an untapped snow land you control: Karplusan Giant gets +1/+1 until end of turn.

Legendary Snakes you control have shroud. (They can't be the targets of spells or abilities.)

Whenever Kashi-Tribe Elite deals combat damage to a creature, tap that creature and it doesn't untap during its controller's next untap step.

Whenever Kashi-Tribe Warriors deals combat damage to a creature, tap that creature and it doesn't untap during its controller's next untap step.

When Kaslem's Stonetree enters the battlefield, look at the top six cards of your library. You may put a land card from among them onto the battlefield tapped. Put the rest on the bottom in a random order.

Craft with Cave (, Exile this artifact, Exile a Cave you control or a Cave card from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)

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 the battlefield with four +1/+1 counters on it.

Kazandu Valley enters the battlefield tapped.

: Add .

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

Flying

, Tap two untapped Birds you control: Return target permanent 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.

Whenever Keldon Berserker attacks, if you control no untapped lands, it gets +3/+0 until end of turn.

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

Haste

When Keldon Overseer enters the battlefield, if it was kicked, gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.

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

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.

Khalni Garden enters the battlefield tapped.

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

: Add .

Khalni Territory enters the battlefield tapped.

: Add .

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.)

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.")

: Destroy target tapped creature. Activate only during your turn, before attackers are declared.

Whenever you tap a nonland permanent for mana, add one mana of any type that permanent produced.

: Look at the top five cards of your library. You may put a non-Human creature card from among them onto the battlefield. Put the rest on the bottom of your library in a random order.

Whenever a creature with power 4 or greater enters the battlefield under your control, draw a card.

−1: Untap target permanent.

+1: Conjure a card named Kraken Hatchling into your hand.

+1: Untap target creature or land. Prevent all damage that would be dealt to and dealt by that permanent until your next turn.

−3: You may sacrifice a Kraken. If you do, create an 8/8 blue Kraken creature token.

Artifacts, creatures, and lands your opponents control enter the battlefield tapped.

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

Flying

When Kitesail Cleric enters the battlefield, if it was kicked, tap up to two target creatures.

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)

When Kitsune Dawnblade enters the battlefield, you may tap target creature.

When Kitt Kanto enters the battlefield, create a 1/1 green and white Citizen creature token.

At the beginning of combat on each player's turn, you may tap two untapped creatures you control. When you do, target creature that player controls gets +2/+2 and gains trample until end of turn. Goad that creature.

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)

If Knight of the Holy Nimbus would be destroyed, regenerate it. (Tap it, remove it from combat, and heal all damage on it.)

: Knight of the Holy Nimbus can't be regenerated this turn. Only your opponents may activate this ability.

Trample

Rapid-fire Battle Cannon — When Knight Paladin enters the battlefield, it deals 4 damage to each opponent.

Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

Whenever Knotvine Paladin attacks, it gets +1/+1 until end of turn for each untapped creature you control.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

This spell can't be countered.

At the beginning of each upkeep, create a 3/3 blue Serpent creature token named Koma's Coil.

Sacrifice another Serpent: Choose one —

• Tap target permanent. Its activated abilities can't be activated this turn.

• Koma, Cosmos Serpent gains indestructible until end of turn.

When Kor Cartographer enters the battlefield, you may search your library for a Plains card, put it onto the battlefield tapped, then shuffle.

When Kor Hookmaster enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Korlash, Heir to Blackblade's power and toughness are each equal to the number of Swamps you control.

: Regenerate Korlash.

Grandeur — Discard another card named Korlash, Heir to Blackblade: Search your library for up to two Swamp cards, put them onto the battlefield tapped, then shuffle.

+1: Untap target Mountain. It becomes a 4/4 red Elemental creature until end of turn. It's still a land.

−2: Add for each Mountain you control.

−5: You get an emblem with "Mountains you control have ‘: This land deals 1 damage to any target.'"

Flying, trample

When Krenko's Buzzcrusher enters the battlefield, for each player, destroy up to one nonbasic land that player controls. For each land destroyed this way, its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.

: Untap target land.

Threshold — : Untap up to three target lands. Activate only if seven or more cards are in your graveyard.

Provoke (Whenever this creature attacks, you may have target creature defending player controls untap and block it if able.)

Krosan Vorine can't be blocked by more than one creature.