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.

As long as Kitesail Apprentice is equipped, it gets +1/+1 and has flying.

Kinship — At the beginning of your upkeep, you may look at the top card of your library. If it shares a creature type with Kithkin Zephyrnaut, you may reveal it. If you do, Kithkin Zephyrnaut gets +2/+2 and gains flying and vigilance until end of turn.

If Kjeldoran Outpost would enter the battlefield, sacrifice a Plains instead. If you do, put Kjeldoran Outpost onto the battlefield. If you don't, put it into its owner's graveyard.

: Add .

, : Create a 1/1 white Soldier creature token.

Enchant creature

Enchanted creature gets +1/+2.

: Attach Kjeldoran Pride to target creature other than enchanted creature.

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.

First strike

, Do the Hokey Pokey: Prevent all damage a source of your choice would deal to Knight of the Hokey Pokey this turn. (To do the Hokey Pokey, choose an arm, a leg, or your whole self and put it in. Put it out. Put it in. Shake it all about. You do the Hokey Pokey Turn yourself around.)

Renown 1 (When this creature deals combat damage to a player, if it isn't renowned, put a +1/+1 counter on it and it becomes renowned.)

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.)

When Knight-Captain of Eos enters the battlefield, create two 1/1 white Soldier creature tokens.

, Sacrifice a Soldier: Prevent all combat damage that would be dealt this turn.

Flying

When Knollspine Dragon enters the battlefield, you may discard your hand and draw cards equal to the damage dealt to target opponent this turn.

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

Prowl (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Rogue.)

Search target opponent's library for an instant or sorcery card. You may cast that card without paying its mana cost. Then that player shuffles.

Imprint — When Knowledge Pool enters the battlefield, each player exiles the top three cards of their library.

Whenever a player casts a spell from their hand, that player exiles it. If the player does, they may cast a spell from among other cards exiled with Knowledge Pool without paying its mana cost.

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.

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.

Other creatures you control get +1/+1.

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.

Kor Spiritdancer gets +2/+2 for each Aura attached to it.

Whenever you cast an Aura spell, you may draw a card.

: Add .

, : Add .

, : Add or .

Vehicles you control have crew 2.

At the beginning of combat on your turn, target artifact creature you control gains lifelink and vigilance until end of turn.

: Target creature can't block Kozilek's Pathfinder this turn. ( represents colorless mana.)

Reach

Undergrowth — When Kraul Harpooner enters the battlefield, choose up to one target creature you don't control with flying. Kraul Harpooner gets +X/+0 until end of turn, where X is the number of creature cards in your graveyard, then you may have Kraul Harpooner fight that creature.

Flying, haste

Whenever an opponent casts their second spell each turn, draw a card.

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

Whenever Krenko, Tin Street Kingpin attacks, put a +1/+1 counter on it, then create a number of 1/1 red Goblin creature tokens equal to Krenko's power.

At the beginning of your upkeep, sacrifice Krosan Cloudscraper unless you pay .

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

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 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.

Indestructible

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

You have no maximum hand size.

If you would lose unspent mana, that mana becomes colorless instead.

When Kujar Seedsculptor enters the battlefield, put a +1/+1 counter on target creature you control.

Kukemssa Serpent can't attack unless defending player controls an Island.

, Sacrifice an Island: Target land an opponent controls becomes an Island until end of turn.

When you control no Islands, sacrifice Kukemssa Serpent.

If a creature dealt damage by Kumano's Pupils this turn would die, exile it instead.

At the beginning of your upkeep, sacrifice Kuro, Pitlord unless you pay .

Pay 1 life: Target creature gets -1/-1 until end of turn.

Double strike

Creatures you control with first strike have double strike.

Whenever you cast a Spirit or Arcane spell, target opponent exiles a card from their hand.

Heroic — Whenever you cast a spell that targets Labyrinth Champion, Labyrinth Champion deals 2 damage to any target.

Menace

Whenever a creature you control with menace becomes blocked, defending player sacrifices a creature blocking it.

: Creatures you control with menace get +1/+0 until end of turn.

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.)

Lambholt Pacifist can't attack unless you control a creature with power 4 or greater.

At the beginning of each upkeep, if no spells were cast last turn, transform Lambholt Pacifist.

Flying

When Lamplight Phoenix dies, you may exile it and collect evidence 4. If you do, return Lamplight Phoenix to the battlefield tapped. (To collect evidence 4, exile cards with total mana value 4 or greater from your graveyard.)

Land Cap 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 Land Cap.

: Add or . Put a depletion counter on Land Cap.

You draw cards from the bottom of your library instead of the top of your library.

Whenever a player casts a blue spell, you may pay . If you do, untap target permanent.

Counter target spell. If that spell is countered this way, put it on top of its owner's library instead of into that player's graveyard.

Each player discards a card, then loses 1 life, then sacrifices an artifact, a creature, an enchantment, a land, a planeswalker, and a tribal permanent, then exiles a card from their graveyard, then puts the top card of their library into their graveyard, then removes a counter from a permanent they control, then gets a poison counter.

Target creature gets -3/-3 until end of turn.

Creatures you control but don't own are Mercenaries in addition to their other types.

At the beginning of your upkeep, exile the top X cards of target opponent's library, where X is the number of outlaws you control. Until end of turn, you may cast spells from among those cards, and mana of any type can be spent to cast those spells.

As an additional cost to cast this spell, sacrifice a creature.

Destroy target creature. Its controller loses 2 life.

Lava Spike deals 3 damage to target player or planeswalker.

: Add .