Whenever you gain life, put two +1/+1 counters on Karlov of the Ghost Council.

, Remove six +1/+1 counters from Karlov of the Ghost Council: Exile target creature.

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

Other Rats you control have toxic 1.

When Karumonix enters the battlefield, look at the top five cards of your library. You may reveal any number of Rat cards from among them and put the revealed cards into your hand. Put the rest on the bottom of your library in a random order.

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.)

Flying, vigilance, haste

Whenever you cast another spell that has convoke, scry 2, then draw a card.

Whenever a creature you control that was turned face up this turn deals combat damage to a player, draw a card.

: Turn target face-down attacking creature you control face up.

Your opponents and permanents your opponents control with hexproof can be the targets of spells and abilities you control as though they didn't have hexproof.

−3: Exile target creature.

At the beginning of each opponent's end step, if that player controls more creatures than you, create a 1/1 white Soldier creature token.

At the beginning of each opponent's end step, if that player controls more lands than you, you may search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle.

: Put target artifact, instant, or sorcery card from a graveyard on the bottom of its owner's library.

, : Choose target opponent who has more life than you do as you activate this ability. Keeper of the Flame deals 2 damage to that player.

, : 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

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

Double strike

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

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.

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

You may pay rather than pay the mana cost for Samurai spells you cast, where X is that spell's mana value.

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.

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

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.

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.

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.

Discard a card at random. If you do, Kindle the Carnage deals damage equal to that card's mana value to each creature. You may repeat this process any number of times.

Flying

Whenever King of the Oathbreakers or another Spirit you control becomes the target of a spell, it phases out. (Treat it and anything attached to it as though they don't exist until your next turn.)

Whenever King of the Oathbreakers or another Spirit you control phases in, create a tapped 1/1 white Spirit creature token with flying.

Flying

Whenever another nontoken creature you control dies, you may pay 2 life and exile it. If you do, create a token that's a copy of that creature, except it's 1/1 and has toxic 1. (Players dealt combat damage by it also get a poison counter.)

+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."

Target player gains 7 life and draws two cards.

: Knight of the Ebon Legion gets +3/+3 and gains deathtouch until end of turn.

At the beginning of your end step, if a player lost 4 or more life this turn, put a +1/+1 counter on Knight of the Ebon Legion. (Damage causes loss of life.)

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.

First strike, protection from black borders (Nothing with a black border can block, target, deal damage to, or attach to this creature.)

First strike, protection from loose lips (Nothing with an open mouth in its artwork can block, target, deal damage to, or attach to this creature.)

First strike, protection from two-word names (Nothing with exactly two words in its name can block, target, deal damage to, or attach to this creature. Hyphenated words are one word.)

, Sacrifice another nontoken creature: Create a 1/1 white and black Spirit creature token with flying.

Afterlife 3 (When this creature dies, create three 1/1 white and black Spirit creature tokens with flying.)

Vigilance

When Knight of the New Coalition enters the battlefield, create a 2/2 white and blue Knight creature token with vigilance.

Knight of the Reliquary gets +1/+1 for each land card in your graveyard.

, Sacrifice a Forest or Plains: Search your library for a land card, put it onto the battlefield, then shuffle.

Dinosaur spells you cast cost less to cast.

First strike

When Knight of the White Orchid enters the battlefield, if an opponent controls more lands than you, you may search your library for a Plains card, put it onto the battlefield, then shuffle.

When Knights of the Black Rose enters the battlefield, you become the monarch.

Whenever an opponent becomes the monarch, if you were the monarch as the turn began, that player loses 2 life and you gain 2 life.

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.

When Kogla, the Titan Ape enters the battlefield, it fights up to one target creature you don't control.

Whenever Kogla attacks, destroy target artifact or enchantment defending player controls.

: Return target Human you control to its owner's hand. Kogla gains indestructible until end of turn.

Flying

Whenever a Dragon you control attacks, creatures you control get +1/+0 until end of turn.

Dash (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

Kor Scythemaster has first strike as long as it's attacking.

+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.'"

When you cast this spell, up to two target players each manifest two cards from their hands. For each card manifested this way, you draw a card. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

Other colorless creatures you control get +3/+2.

Creatures with power less than the number of Islands you control can't block Kraken of the Straits.

If you would roll a die, instead roll two of those dice and ignore one of those results.

Whenever another creature dies, you may put X +1/+1 counters on Kresh the Bloodbraided, where X is that creature's power.

Flying

Whenever Krothuss, Lord of the Deep attacks, create a tapped and attacking token that's a copy of another target attacking creature. If that creature is a Kraken, Leviathan, Octopus, or Serpent, create two of those tokens instead.

At end of combat, if Kytheon, Hero of Akros and at least two other creatures attacked this combat, exile Kytheon, then return him to the battlefield transformed under his owner's control.

: Kytheon gains indestructible until end of turn.

Creatures you control get +2/+1 until end of turn.

Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, those creatures also gain vigilance until end of turn. (Attacking doesn't cause them to tap.)