: Knight of the Skyward Eye gets +3/+3 until end of turn. Activate only once each turn.

Vigilance (Attacking doesn't cause this creature to tap.)

Convoke

When Knight-Errant of Eos enters the battlefield, look at the top six cards of your library. You may reveal up to two creature cards with mana value X or less from among them, where X is the number of creatures that convoked Knight-Errant of Eos. Put the revealed cards into your hand, 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.

, Discard a card with mana value X: Knollspine Invocation deals X damage to any target.

Other Kobold creatures you control get +0/+1 and have trample.

Whenever Kolaghan Aspirant becomes blocked by a creature, Kolaghan Aspirant deals 1 damage to that creature.

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.)

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

As long as you control a legendary Samurai, Konda's Hatamoto gets +1/+2 and has vigilance. (Attacking doesn't cause this creature to tap.)

Rally — Whenever Kor Entanglers or another Ally enters the battlefield under your control, tap target creature an opponent controls.

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

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

+2: Search your library for a basic Mountain card, reveal it, put it into your hand, then shuffle.

−3: Koth, Fire of Resistance deals damage to target creature equal to the number of Mountains you control.

−7: You get an emblem with "Whenever a Mountain enters the battlefield under your control, this emblem deals 4 damage to any target."

When you cast this spell, if you have fewer than seven cards in hand, draw cards equal to the difference.

Menace

Discard a card with mana value X: Counter target spell with mana value X.

Devoid (This card has no color.)

Kozilek's Return deals 2 damage to each creature.

Whenever you cast an Eldrazi creature spell with mana value 7 or greater, you may exile Kozilek's Return from your graveyard. If you do, Kozilek's Return deals 5 damage to each creature.

Devoid (This card has no color.)

Pay 1 life: Add . Activate only once each turn. ( represents colorless mana.)

At the beginning of each upkeep, if a player cast two or more spells last turn, transform Krallenhorde Wantons.

Enchant creature

Enchanted creature can't attack or block, and its activated abilities can't be activated.

, Return Krasis Incubation to its owner's hand: Put two +1/+1 counters on enchanted creature.

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.

Enchant creature

Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies. The copies enter the battlefield as tokens.)

Enchanted creature gets +1/+0 and has vigilance.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

: Target black creature gets -2/-0 until end of turn.

: Untap target land.

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

: 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.

Flying

Krovikan Mist's power and toughness are each equal to the number of Illusions on the battlefield.

( can be paid with either or 2 life.)

Lifelink

For each in a cost, you may pay 2 life rather than pay that mana.

Whenever you cast a black spell, put a +1/+1 counter on K'rrik, Son of Yawgmoth.

Vigilance, menace, lifelink

Creature cards in graveyards can't enter the battlefield.

Players can't cast spells from graveyards.

At the beginning of each player's upkeep, that player sacrifices a creature.

Whenever you activate an ability of an artifact, if it isn't a mana ability, you may pay . If you do, copy that ability. You may choose new targets for the copy.

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.

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

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.)

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.)

When Lagonna-Band Storyteller enters the battlefield, you may put target enchantment card from your graveyard on top of your library. If you do, you gain life equal to its mana value.

Players play with the top card of their libraries revealed.

, Sacrifice Lantern of Insight: Target player shuffles.

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

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.

Target creature gets +2/+1 and gains deathtouch until end of turn.

Choose two target creatures. Untap them. Put two +1/+1 counters on each of them. They gain vigilance, indestructible, and haste until end of turn. After this main phase, there is an additional combat phase. Only the chosen creatures can attack during that combat phase.

Lifelink

At the beginning of each end step, if you gained life this turn, distribute up to that many +1/+1 counters among any number of other target creatures.

, , Discard two cards: Latulla, Keldon Overseer deals X damage to any target.

: Add .

At the beginning of each player's upkeep, that player may put a doom counter on Lavabrink Floodgates or remove a doom counter from it. Then if it has three or more doom counters on it, sacrifice Lavabrink Floodgates. When you do, it deals 6 damage to each creature.

Motivate (This creature can't attack or block unless you have paid its motivate cost once. Motivate only as a sorcery.)

When CARDNAME enters the battlefield, it deals 2 damage to any target.

When Legion Conquistador enters the battlefield, you may search your library for any number of cards named Legion Conquistador, reveal them, put them into your hand, then shuffle.

Red creatures you control get +1/+0.

White creatures you control get +0/+1.

, Exile Legion's Initiative: Exile all creatures you control. At the beginning of the next combat, return those cards to the battlefield under their owner's control and those creatures gain haste until end of turn.

Exile target nonland permanent an opponent controls and all tokens that player controls with the same name as that permanent.

Coven — At the beginning of combat on your turn, put a +1/+1 counter on up to one target creature you control. Then if you control three or more creatures with different powers, draw a card.

Heroic — Whenever you cast a spell that targets Leonin Iconoclast, destroy target enchantment creature an opponent controls.

When Leonin of the Lost Pride dies, exile target card from an opponent's graveyard.

Equipped creature gets +1/+1.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

When Leonin Snarecaster enters the battlefield, you may tap target creature.