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

As Keeper of the Sacred Word enters the battlefield, choose a word.

Whenever an opponent says the chosen word, Keeper of the Sacred Word gets +3/+3 until end of turn.

When Kellan Joins Up enters the battlefield, 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 enters the battlefield under your control, put a +1/+1 counter on each creature you control.

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.

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 the battlefield, draw a card for each other permanent you control with mana value 3 or greater.

Delirium — Kessig Dire Swine has trample as long as there are four or more card types among cards in your graveyard.

: Transform Kessig Prowler.

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.

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

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

Trample

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.

: 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.

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 the battlefield, 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.

Choose a creature type. Reveal cards from the top of your library until you reveal X creature cards of the chosen type, where X is the number of creatures you control of that type. Put those cards onto the battlefield, then shuffle the rest of the revealed cards into your library.

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.

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.

: Regenerate Kin-Tree Warden.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

+1: Untap up to one target creature and up to one target land.

−2: Reveal the top four cards of your library. You may put a creature card and/or a land card from among them into your hand. Put the rest into your graveyard.

−8: You get an emblem with "Whenever a creature enters the battlefield under your control, you may have it fight target creature." Then create three 8/8 blue Octopus creature tokens.

+1: Until your next turn, prevent all damage that would be dealt to and dealt by target permanent an opponent controls.

−1: Draw a card. You may play an additional land this turn.

−5: You get an emblem with "At the beginning of your end step, create a 9/9 blue Kraken creature token."

Other Plants and Treefolk you control get +2/+0.

At the beginning of your postcombat main phase, return target Plant, Treefolk, or land card from your graveyard to your hand.

, : Target attacking creature gets +2/+2 until end of turn.

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.

Flying, haste

Whenever Klauth, Unrivaled Ancient attacks, add X mana in any combination of colors, where X is the total power of attacking creatures. Spend this mana only to cast spells. Until end of turn, you don't lose this mana as steps and phases end.

Indestructible

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

At the beginning of your precombat main phase, exile target card from a graveyard. If it was a land card, add or . Otherwise, you gain 2 life and Klothys deals 2 damage to each opponent.

Knickknack Ouphe enters the battlefield with X +1/+1 counters on it.

When Knickknack Ouphe enters the battlefield, reveal the top X cards of your library. You may put any number of Aura cards with mana value X or less from among them onto the battlefield. Then put all cards revealed this way that weren't put onto the battlefield on the bottom of your library in a random order.

Each other multicolored creature you control gets +1/+1 for each of its colors.

Dinosaur spells you cast cost less to cast.

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

Reach

Whenever another permanent enters the battlefield under your control, if it wasn't put onto the battlefield with this ability, you may put a permanent card with equal or lesser mana value from your hand onto the battlefield.

Partner (You can have two commanders if both have partner.)

Whenever you cast a Spirit or Arcane spell, each other creature you control gets +1/+1 and gains trample until end of turn.

Target creature gets +2/+2 until end of turn.

Splice onto Arcane (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

When Kogla and Yidaro enters the battlefield, choose one —

• It gains trample and haste until end of turn.

• It fights target creature you don't control.

, Discard Kogla and Yidaro: Destroy up to one target artifact or enchantment. Shuffle Kogla and Yidaro into your library from your graveyard, then draw a card.

As long as you control three or more legendary creatures, Kolvori gets +4/+2 and has vigilance.

, : Look at the top six cards of your library. You may reveal a legendary creature card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

You may look at the top card of your library any time.

You may cast Dragon spells from the top of your library.

: Target creature gets +1/+1 and gains intimidate until end of turn. (It can't be blocked except by artifact creatures and/or creatures that share a color with it.)

, Sacrifice a nontoken creature: Create X 1/1 green Saproling creature tokens, where X is the sacrificed creature's toughness.

Flying

Whenever Korvold, Fae-Cursed King enters the battlefield or attacks, sacrifice another permanent.

Whenever you sacrifice a permanent, put a +1/+1 counter on Korvold and draw a card.

As long as Kosei, Penitent Warlord is enchanted, equipped, and has a counter on it, Kosei has "Whenever Kosei, Penitent Warlord deals combat damage to an opponent, you draw that many cards and Kosei deals that much damage to each other opponent."

Krakilin enters the battlefield with X +1/+1 counters on it.

: Regenerate Krakilin.

Undergrowth — When Kraul Foragers enters the battlefield, you gain 1 life for each creature card in your graveyard.

Deathtouch

Reach

When Kraul Whipcracker enters the battlefield, destroy target token an opponent controls.

Trample

Whenever a creature with power 4 or greater enters the battlefield under your control, put a +1/+1 counter on Kronch Wrangler.

At the beginning of your upkeep, put a shield counter on target creature an opponent controls.

Whenever you put one or more counters on a creature you don't control, tap that creature and goad it. It gains trample until your next turn. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)

Reach (This creature can block creatures with flying.)

, Discard a card: Krosan Archer gets +0/+2 until end of turn.

Threshold — Krosan Beast gets +7/+7 as long as seven or more cards are in your graveyard.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Creature spells you cast with mana value 6 or greater cost less to cast.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)

Destroy target artifact or enchantment.

Target player shuffles up to two target cards from their graveyard into their library.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)