msem-instigator

Experience (Whenever this creature attacks, if it has fewer than three +1/+1 counters on it, put a +1/+1 counter on it.)
Remove a +1/+1 counter from Kor Skyknight: It gains flying until end of turn.

Kicker {X} (You may pay an additional {X} as you cast this spell.)
When Korrinary Warcaller enters, if it was kicked, search your library for a Rebel permanent card with mana value X or less, put it onto the battlefield, then shuffle.

Koth's Retaliation deals 4 damage to target creature. When that creature dies this turn, exile its controller's graveyard.

Art of war — At the beginning of your end step, if Kowareta Informant dealt damage to an opponent this turn, draw a card, then discard a card.

Lifelink
When Kragma Eviscerator enters, it deals 2 damage to target creature or planeswalker you don't control. Then destroy that creature or planeswalker if you control a creature with power greater than its base power.

{T}: Add {R}.
{R}, {T}: Target creature gains haste until end of turn.

Destroy target land. Create a 1/1 red Goblin creature token.

First strike, haste
Whenever Kragnoss' Battlecharger attacks, it gets +1/+0 until end of turn for each attacking creature.

Once each turn, when you sacrifice a land, you may add one mana of any color. Until end of turn, you don't lose this mana as steps and phases end.

Krismite Shard enters tapped.
{1}, {T}, Sacrifice Krismite Shard: Aetherize target creature you control. (To aetherize, create a token that's a copy of it, then exile that token.)

When Kula's Disciple dies, put it on the bottom of its owner's library.

Target creature you control deals damage equal to its power to target player or planeswalker.
Inscribe {4}{R}{G} ({4}{R}{G}: Exile this card from your hand inscribed on a creature you control. Whenever that creature attacks, its controller may cast a copy of the inscribed card without paying its mana cost. Inscribe only as a sorcery.)

Sacrifice Kumo-no-Oni: Prevent all combat damage that would be dealt this turn.

Target creature you control gets +3/+1 and gains trample until end of turn.
Showcase {3}{R}{R} (Then if you cast this for its showcase cost, create a 1/1 red Bard creature token that can't block and exile this. Whenever it attacks, you may cast a free copy of this.)

Art of war — At the beginning of your end step, if Kurayami Butcher dealt damage to an opponent, you may destroy target creature that was dealt damage this turn.

Whenever another nontoken creature you control dies, you may exile it. If you do, create a 2/2 colorless Spirit creature token.

{T}: Add {C}.
Tap an untapped creature you control: Kurayami Shrine becomes a 1/1 Spirit creature with deathtouch until end of turn. It's still a land.

Art of war — At the beginning of your end step, if Kuryu Swordsman dealt damage to an opponent this turn, you may have Kuryu Swordsman fight target creature you don't control. (Each deals damage equal to its power to the other.)

Create three 1/1 green Insect creature tokens, then put a +1/+1 counter on each of them.

Vigilance
Prismatic — Whenever you cast a multicolored spell, put a +1/+1 counter on Kwende Peak Huntsman.

When Kwende Peak Partisan enters, exile the top card of your library. If it's a land card, you may play it this turn.

Reach
Whenever a lore counter is put on a Saga you control, Kwende Peak Sentry deals 1 damage to each opponent.

Flying

{4}{W}: Tap target creature.

Trample
{2/G}{2/G}, {T}: Put two +1/+1 counters on Laden Bruiser.