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.

For each creature, its controller sacrifices it unless they pay X life.

, , 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.

Until end of turn, target creature gets +1/+1 for each creature you control and gains trample. It must be blocked this turn if able.

Create an X/X black and green Spirit Warrior creature token, where X is the greatest toughness among creatures you control.

Vigilance, ward

Whenever you cast a Kraken, Leviathan, Octopus, or Serpent spell from your hand, look at the top X cards of your library, where X is that spell's mana value. You may cast a spell with mana value less than X from among them without paying its mana cost. Put the rest on the bottom of your library in a random order.

: Tap target Spirit.

When Kitt Kanto enters, 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.

Whenever an enchantment you control is put into a graveyard from the battlefield, create a 1/1 white Bird creature token with flying.

Enchant creature

When Knightly Valor enters, create a 2/2 white Knight creature token with vigilance. (Attacking doesn't cause it to tap.)

Enchanted creature gets +2/+2 and has vigilance.

, : Add .

, : Exile the top card of your library face down.

: Sacrifice Knowledge Vault. If you do, discard your hand, then put all cards exiled with Knowledge Vault into their owner's hand.

When Knowledge Vault leaves the battlefield, put all cards exiled with Knowledge Vault into their owner's graveyard.

Flying

When Kokusho, the Evening Star dies, each opponent loses 5 life. You gain life equal to the life lost this way.

Spells your opponents cast that target a Merfolk you control cost more to cast.

Abilities your opponents activate that target a Merfolk you control cost more to activate.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I, II — Create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

III — Exile the top three cards of target opponent's library. You may play those cards this turn.

This spell costs less to cast for each card type among permanents you've sacrificed this turn.

Flying, trample, haste

Whenever Korvold deals combat damage to a player, put X +1/+1 counters on Korvold and draw X cards, where X is the number of permanent types among cards in your graveyard.

Flying

Whenever you cast your second spell each turn, put a +1/+1 counter on Kraum, Violent Cacophony and draw a card.

Trample

Threshold — : Regenerate Krosan Avenger. Activate only if seven or more cards are in your graveyard.

Krosan Verge enters tapped.

: Add .

, , Sacrifice Krosan Verge: Search your library for a Forest card and a Plains card, put them onto the battlefield tapped, then shuffle.

: Target creature gets +1/+0 until end of turn.

: Target creature you control gains flying until end of turn. Sacrifice it at the beginning of the next end step.

At the beginning of the end step, if Krovikan Horror is in your graveyard with a creature card directly above it, you may return Krovikan Horror to your hand.

, Sacrifice a creature: Krovikan Horror deals 1 damage to any target.

Enchant non-Wall creature you control

When Krovikan Plague enters, draw a card at the beginning of the next turn's upkeep.

Tap enchanted creature: Krovikan Plague deals 1 damage to any target. Put a -0/-1 counter on enchanted creature. Activate only if enchanted creature is untapped.

At the beginning of each end step, if a creature dealt damage by Krovikan Vampire this turn died, put that card onto the battlefield under your control. Sacrifice it when you lose control of Krovikan Vampire.

Equipped creature gets +2/+0.

, , Sacrifice Krovod Haunch: You gain 3 life.

When Krovod Haunch is put into a graveyard from the battlefield, you may pay . If you do, create two 1/1 white Dog creature tokens.

Equip

Menace, ward , haste

Whenever Kylox, Visionary Inventor attacks, sacrifice any number of other creatures, then exile the top X cards of your library, where X is their total power. You may cast any number of instant and/or sorcery spells from among the exiled cards without paying their mana costs.

At the beginning of your upkeep, you may exile the top card of your library face down.

, Discard your hand, Sacrifice Kyren Archive: Put all cards exiled with Kyren Archive into their owner's hand.

Target creature gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy that creature.)

Draw a card.

If you would put one or more counters on a creature or planeswalker you control or on yourself, put that many plus one of each of those kinds of counters on that permanent or player instead.

Choose a Background (You can have a Background as a second commander.)

Whenever you cast a noncreature spell, Lambholt Ravager deals 2 damage to each opponent.

Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.)

, Sacrifice a creature: Each opponent loses 1 life and you gain 1 life.

Flying

Whenever two or more creatures you control attack a player, target attacking creature without flying gains flying until end of turn.

: Add .

: Add or . Lantern-Lit Graveyard doesn't untap during your next untap step.

: Add one mana of any color.

, : Tap target artifact.

, : Surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)

, : Goad target creature. (Until your next turn, it attacks each combat if able and attacks a player other than you if able.)

Menace (This creature can't be blocked except by two or more creatures.)

Whenever Lathril deals combat damage to a player, create that many 1/1 green Elf Warrior creature tokens.

, Tap ten untapped Elves you control: Each opponent loses 10 life and you gain 10 life.

Partner with Kamber, the Plunderer (When this creature enters, target player may put Kamber into their hand from their library, then shuffle.)

First strike

, Sacrifice an artifact or creature: Goad target creature. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)

Destroy target nonbasic land unless its controller has Lava Blister deal 6 damage to them.

Lava Coil deals 4 damage to target creature. If that creature would die this turn, exile it instead.

Destroy target creature or land.

Haste

Whenever Lava Runner becomes the target of a spell or ability, that spell or ability's controller sacrifices a land of their choice.

Lava Spike deals 3 damage to target player or planeswalker.

Lava Tubes doesn't untap during your untap step if it has a depletion counter on it.

At the beginning of your upkeep, remove a depletion counter from Lava Tubes.

: Add or . Put a depletion counter on Lava Tubes.

If an opponent had two or more lands enter the battlefield under their control this turn, you may pay rather than pay this spell's mana cost.

Destroy two target lands. Lavaball Trap deals 4 damage to each creature.

At the beginning of each opponent's upkeep, if that player has two or fewer cards in hand, Lavaborn Muse deals 3 damage to that player.

As Lavabrink Venturer enters, choose odd or even. (Zero is even.)

Lavabrink Venturer has protection from each mana value of the chosen quality.

Vanishing 1 (This creature enters with a time counter on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)

Whenever a creature you control deals combat damage to a player, put a time counter on Lavacore Elemental.

: Creatures you control get +3/+0 until end of turn.

Whenever Lavakin Brawler attacks, it gets +1/+0 until end of turn for each Elemental you control.

Enchant creature

Enchanted creature has ": This creature deals 1 damage to target creature."

As long as enchanted creature is a Wizard, it has ": This creature deals 2 damage to target creature."