Green creatures you control get +1/+1.

Flying

Cycling (, Discard this card: Draw a card.)

When Keeper of Keys enters the battlefield, you become the monarch.

At the beginning of your upkeep, if you're the monarch, creatures you control can't be blocked this turn.

: Add , , or .

Cycling (, Discard this card: Draw a card.)

Keymaster Rogue can't be blocked.

When Keymaster Rogue enters the battlefield, return a creature you control to its owner's hand.

All lands are Islands in addition to their other types.

Other Homarids, Camarids, Cephalids, Nautilids, and Merfolk you control get +1/+1.

Destroy target nonblack creature.

Gotcha — If an opponent says "kill" or "destroy," you may say "Gotcha" When you do, return Kill Destroy from your graveyard to your hand.

Spells you cast that refer to artifacts or Contraptions in their rules text cost less to cast.

As Kindred Discovery enters the battlefield, choose a creature type.

Whenever a creature you control of the chosen type enters the battlefield or attacks, draw a card.

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.

Kiyomaro, First to Stand's power and toughness are each equal to the number of cards in your hand.

As long as you have four or more cards in hand, Kiyomaro has vigilance.

Whenever Kiyomaro deals damage, if you have seven or more cards in hand, you gain 7 life.

: All combat damage that would be dealt to you by unblocked creatures this turn is dealt to Kjeldoran Royal Guard instead.

Flying; first strike; banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

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.

Protection from black (This creature can't be blocked, targeted, dealt damage, or enchanted by anything black.)

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

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.)

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 your library.

Enchant creature

When Knightly Valor enters the battlefield, 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.

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 Sky Climber gains flying until end of turn.

Whenever a player casts a blue spell, you may gain 1 life.

Sacrifice Krosan Wayfarer: You may put a land card from your hand onto the battlefield.

, : Prevent all damage that would be dealt this turn by target creature you control. That creature gets +0/+X until end of turn, where X is its converted mana cost.

Tap another untapped Merfolk you control: Kumena, Tyrant of Orazca can't be blocked this turn.

Tap three untapped Merfolk you control: Draw a card.

Tap five untapped Merfolk you control: Put a +1/+1 counter on each Merfolk you control.

Flying

Whenever you cast a noncreature spell, create a 1/1 white Spirit creature token with flying.

Sacrifice a Spirit: Add .

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

Flying

Kyren Glider can't block.

Tap an untapped creature you control: Kyren Negotiations deals 1 damage to target player or planeswalker.

, : Put a charge counter on Kyren Toy.

, Remove X charge counters from Kyren Toy: Add an amount of equal to X plus one.

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 draw a card while your library has no cards in it, you win the game instead.

When Labyrinth Guardian becomes the target of a spell, sacrifice it.

Embalm (, Exile this card from your graveyard: Create a token that's a copy of it, except it's a white Zombie Illusion Warrior with no mana cost. Embalm only as a sorcery.)

: Add .

, : Remove target attacking or blocking creature from combat.

Whenever you crank Lackey Recycler, put target creature card from your graveyard on top of your library.

, : Prevent all combat damage that would be dealt by target creature this turn.

: Return Lady Sun and another target creature to their owners' hands. Activate this ability only during your turn, before attackers are declared.

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 converted mana cost.

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.

Whenever a creature you control deals combat damage to a player, that player discards a card.

Shuffle a card from your hand into your library. If you do, draw two cards at the beginning of the next turn's upkeep.

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

Destroy target creature. Its controller loses 2 life.

Counter target spell. Look at its controller's hand.

Enchant permanent

You control enchanted permanent.

Cycling (, Discard this card: Draw a card.)

Destroy target land.

Cycling (, Discard this card: Draw a card.)

Support 2. (Put a +1/+1 counter on each of up to two target creatures.)

: Add .

Flying

: Leering Gargoyle gets -2/+2 and loses flying until end of turn.

: Exile target permanent.

If Legacy Weapon would be put into a graveyard from anywhere, reveal Legacy Weapon and shuffle it into its owner's library instead.

Haste

Battalion — Whenever Legion Loyalist and at least two other creatures attack, creatures you control gain first strike and trample until end of turn and can't be blocked by creature tokens this turn.