Flying

Confounding Clouds — When Juvenile Mist Dragon enters the battlefield, for each opponent, tap up to one target creature that player controls. Each of those creatures doesn't untap during its controller's next untap step.

When Jyoti, Moag Ancient enters the battlefield, create a 1/1 green Forest Dryad land creature token for each time you've cast your commander from the command zone this game. (They're affected by summoning sickness.)

At the beginning of each combat, land creatures you control get +X/+X until end of turn, where X is Jyoti's power.

Choose any number of target players or planeswalkers. For each of them, reveal cards from the top of your library until you reveal a nonland card, Kaboom deals damage equal to that card's mana value to that player or planeswalker, then you put the revealed cards on the bottom of your library in any order.

At the beginning of your end step, goad each creature your opponents control that's enchanted by an Aura you control. Put a +1/+1 counter on Kaima, the Fractured Calm for each creature goaded this way. (Until your next turn, the goaded creatures attack each combat if able and attack a player other than you if able.)

Whenever you cast your first instant spell each turn, if Kalamax, the Stormsire is tapped, copy that spell. You may choose new targets for the copy.

Whenever you copy an instant spell, put a +1/+1 counter on Kalamax.

Kalonian Twingrove's power and toughness are each equal to the number of Forests you control.

When Kalonian Twingrove enters the battlefield, create a green Treefolk Warrior creature token with "This creature's power and toughness are each equal to the number of Forests you control."

Whenever one or more tokens enter the battlefield under your opponents' control, for each of them, create a tapped token that's a copy of it. This ability triggers only once each turn.

Whenever one or more tokens enter the battlefield under your control, each opponent loses 1 life and you gain 1 life.

Flying

Whenever Kangee's Lieutenant attacks, attacking creatures with flying get +1/+1 until end of turn.

Encore (, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

This spell costs less to cast for each creature card in your graveyard.

Once during each of your turns, you may cast a creature spell from your graveyard.

+1: Reveal the top two cards of your library. An opponent chooses one of them. Put that card into your hand and exile the other with a silver counter on it.

−1: Put a card you own with a silver counter on it from exile into your hand.

−2: Create a 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control."

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.

Phasing (This phases in or out before you untap during each of your untap steps. While it's phased out, it's treated as though it doesn't exist.)

Creatures with flying can't attack or block, and their activated abilities with in their costs can't be activated.

Flying, lifelink, protection from Vampires

Katilda, Dawnhart Martyr's power and toughness are each equal to the number of permanents you control that are Spirits and/or enchantments.

Disturb (You may cast this card from your graveyard transformed for its disturb cost.)

Kicker (You may pay an additional as you cast this spell.)

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.)

If Kavu Primarch was kicked, it enters the battlefield with four +1/+1 counters on it.

+1: Creatures you control gain deathtouch until end of turn. Put a +1/+1 counter on up to one target creature token you control.

−2: Until end of turn, if one or more tokens would be created under your control, twice that many of those tokens are created instead.

−6: Exile all cards from all graveyards, then create a 1/1 white Spirit creature token with flying for each card exiled this way.

Draw a card for each attacking creature.

When Keldon Firebombers enters the battlefield, each player sacrifices all lands they control except for three.

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.

For Mirrodin (When this Equipment enters the battlefield, create a 2/2 red Rebel creature token, then attach this to it.)

Equipped creature gets +1/+1 for each creature you control.

Equip

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 Kessig Forgemaster blocks or becomes blocked by a creature, Kessig Forgemaster deals 1 damage to that creature.

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

This spell costs less to cast for each green creature you control.

Trample

: Exile the top card of your library. If it's a land card, put it into your hand. Otherwise, put a study counter on it.

: Create a 0/0 green and blue Fractal creature token. Put a +1/+1 counter on it for each different mana value among nonland cards you own in exile with study counters on them.

Amplify 3 <I>(As this creature enters the battlefield, put three +1/+1 counters on it for each Dragon card you reveal in your hand.)</I>

Flying

: Kilnmouth Dragon deals damage equal to the number of +1/+1 counters on it to any target.

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.

When Kinsbaile Courier enters the battlefield, put a +1/+1 counter on target creature.

Encore (, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

Flying

Creatures you control have "Whenever this creature becomes the target of a spell or ability for the first time each turn, counter that spell or ability."

Flying

Whenever Kitesail Skirmisher attacks, another target creature attacking the same player or planeswalker gains flying until end of turn.

Encore (, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

: Kjeldoran Javelineer deals damage equal to the number of age counters on it to target attacking or blocking creature.

Each other multicolored creature you control gets +1/+1 for each of its colors.

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

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

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

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.

+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.'"

Creature spells you cast cost less to cast.

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

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

Flying, trample

When Krenko's Buzzcrusher enters the battlefield, for each player, destroy up to one nonbasic land that player controls. For each land destroyed this way, its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.

Enchant creature

Cumulative upkeep or (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

You control enchanted creature.

When Krovikan Whispers is put into a graveyard from the battlefield, you lose 2 life for each age counter on it.

( 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.

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

I — Kumano Faces Kakkazan deals 1 damage to each opponent and each planeswalker they control.

II — When you next cast a creature spell this turn, that creature enters the battlefield with an additional +1/+1 counter on it.

III — Exile this Saga, then return it to the battlefield transformed under your control.

Flash

When Kutzil's Flanker enters the battlefield, choose one —

• Put a +1/+1 counter on Kutzil's Flanker for each creature that left the battlefield under your control this turn.

• You gain 2 life and scry 2.

• Exile target player's graveyard.

Whenever another Human enters the battlefield under your control, put a +1/+1 counter on Kyler, Sigardian Emissary.

Other Humans you control get +1/+1 for each counter on Kyler.

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

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.

Living weapon (When this Equipment enters the battlefield, create a 0/0 black Phyrexian Germ creature token, then attach this to it.)

Equipped creature gets +1/+1 for each Swamp you control.

Equip ( can be paid with either or 2 life.)

Target opponent loses 2 life for each Swamp you control. Last Stand deals damage to target creature equal to the number of Mountains you control. Create a 1/1 green Saproling creature token for each Forest you control. You gain 2 life for each Plains you control. Draw a card for each Island you control, then discard that many cards.

Strive — This spell costs more to cast for each target beyond the first.

Until end of turn, any number of target creatures each gain "Whenever this creature attacks, create a 1/1 white Soldier creature token that's tapped and attacking."

Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)

Reach

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

Replicate (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.)

Target creature gets +1/+0 and gains flying and first strike until end of turn.

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.)