msem-instigator

Equipped creature gets +1/+2.
Whenever equipped creature deals combat damage, judge it. (Honor it by putting a +1/+1 counter on it or condemn it by sacrificing it to draw a card.)
Equip {2}

Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.)
Whenever Knight of the Cockatrice attacks, you may pay {1}{R}. When you do, target creature can't block this turn.

Whenever Knight of the Hawk deals combat damage to a player, you may sacrifice it. If you do, search your library for a red legendary creature card, reveal it, put it into your hand, then shuffle.

Knight of the Olive Orchard can't be blocked by more than one creature.

Whenever Knight of the Verdigris deals combat damage to a player, you may sacrifice it. If you do, search your library for a green legendary creature card, reveal it, put it into your hand, then shuffle.

Enchant creature
When Knight's Daring enters, put two +1/+1 counters on enchanted creature.
Whenever enchanted creature deals combat damage to a player, put a +1/+1 counter on each creature you control with a +1/+1 counter on it.

This spell costs {1} less to cast for each embattled creature you control. (A creature is embattled if it has a counter on it or a permanent you control attached to it.)
Haste
Whenever Knights of the Burning Pyre attacks, it deals X damage to each opponent, where X is the number of embattled creatures you control.

Stampede — Whenever Knotvine Preserver and a creature with greater power attack, until end of turn, attacking creatures you control gain “When this creature dies, return it to its owner's hand.”

Whenever Knotweald Ambassador becomes the target of a spell or ability an opponent controls, choose one —
• Knotweald Ambassador deals damage equal to its power to target creature or planeswalker that player controls.
• Draw a card.

Trample
Other creatures you control have trample.
{5}{G}{G}: Creatures you control get +2/+2 until end of turn.

Reach
Knotweald Ranger can't block creatures without flying.

{T}: Add {G} or one mana of any color among cards in your graveyard.

Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.)
At the beginning of combat on your turn, Knotwood Lumberer gains your choice of vigilance or trample until end of turn.

Whenever Knowledge Extractor deals combat damage to a player, draw a card.

Creatures you control get +1/+0 for each color among permanents you control and have haste.
Whenever you cast a white, blue, black, or green instant or sorcery spell, copy it for each of its colors. You may choose new targets for the copies.

Trample
Whenever Komurk Harvester or another creature you control dies, draw cards equal to that creature's power.

Reveal the top five cards of your library. Put a permanent card from among them into your hand. Put the rest on the bottom of your library in any order.

Creatures you control have protection from legendary. (Those creatures can't be blocked, targeted, dealt damage, or enchanted by anything legendary.)

Konoe's Lieutenant gets +1/+1 as long as an opponent controls a legendary permanent.

Play with the top card of your library revealed.
You may cast creature spells from the top of your library. You may cast Centaur spells this way without paying their mana costs.

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

[+1]: Search your library for a Mountain card, reveal it, put it into your hand, then shuffle.
[–2]: Koth, One True Hero deals damage to target creature equal to the number of Mountains you control.
[–7]: Create X 3/1 red Elemental creature tokens with trample and haste, where X is the number of Mountains you control.

Whenever you cast a creature spell, create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)
Whenever you sacrifice an Idol, draw a card.

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

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