msem-instigator

Enchant player
At the beginning of enchanted player's upkeep, that player chooses draw step, main phase, or combat phase. They skip each instance of the chosen step or phase this turn.

Flying, ward {2}
The first noncreature spell you cast each turn costs {X} less to cast, where X is your devotion to blue. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.)

Whenever you cast a spell, if you sacrificed permanents, discarded cards, and/or paid life as an additional cost to cast it, Kernel Knot deals 2 damage to any target. (Sacrificing permanents for mana doesn't count.)

This spell has flash as long as you control another enchantment.
When Kernel Quarantine enters, exile all other creatures until Kernel Quarantine leaves the battlefield.

Flying, deathtouch
Whenever you cast an instant or sorcery spell, return target creature card from your graveyard to the battlefield.

Equipped creature gets +2/+2.
Whenever equipped creature attacks, you may return target creature card with mana value 2 or less from your graveyard to the battlefield.
Equip {2}

Choose two —
• Each opponent sacrifices a creature.
• Each player discards two cards.
• All creatures get -1/-1 until end of turn.
• You draw two cards and you lose 2 life.

Puzzlebox (Begin the game with this and another card you own from outside the game in the command zone, locked. That card is face down until you unlock this.)
{5}: Unlock Key to the Nexus. If {W}{U}{B}{R}{G} was spent to activate this ability, you may cast the revealed card without paying its mana cost. Otherwise, put that card on top of your library.

At the beginning of combat on your turn, untap target land. If that land is an Animus, it becomes a creature and gains haste until end of turn.

Play with the top card of your library revealed.
You may play lands from the top of your library.
At the beginning of your upkeep, if you control fifteen lands with different names, you win the game.

Vigilance
If you would take a combat phase or a main phase, take the other instead.
{U/B}, Pay 1 life: Untap target creature you control.

{B}, Sacrifice a creature: Target player loses 2 life.
{B}, Reappropriate: You gain 2 life. (To reappropriate, exile exactly two cards from your hand and/or graveyard.)

The first artifact spell you cast each turn costs {2} less to cast.
The first ability of an artifact you activate each turn costs {T} less.

Trample
{T}: Draw a card. Put a charge counter on Kilani, Awakened Colossus.
Remove a charge counter from Kilani: Double Kilani's power until end of turn.

{T}: Create a 1/1 colorless Servo artifact creature token.
{T}, Sacrifice an artifact: Killdrone Assembly Works deals 1 damage to any target.

When Kindled Vengeance enters, if you cast it, create seven 1/1 green Elf creature tokens.
Whenever you attack, Kindled Vengeance deals damage equal to the number of attacking creatures to target creature or planeswalker an opponent controls.

Add two mana in any combination of colors. (Then exile this card. You may cast the creature later from exile.)

Reach
When Kindly Greatwood enters, you gain 5 life and draw a card.

Deception {1}{B} ({1}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever King Florence of Caulder enters or attacks, torment each opponent. (They lose 3 life unless they discard a card or sacrifice a nonland permanent.)

Improve {R/W} ({R/W}: Put a +1/+1 counter on this creature. This costs {1} more to activate for each +1/+1 counter on it. Improve only as a sorcery.)
Whenever an embattled creature you control attacks, you may exile the top card of your library. During any turn you attacked with an embattled creature, you may play that card. (A creature is embattled if it has a counter on it or has a permanent you control attached to it.)

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever you cast a noncreature spell, scry 1, then exile the top card of your library. Until end of turn, you may play that card.

Kinjiru Assailant has haste as long as an opponent controls a nonbasic land.

Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
{3}{B}{B}: Choose any number of other nontoken creatures you control. Whenever one of those creatures dies this turn, create a token that's a copy of that creature, except it has no mana cost.

When Kinken, the Dragon's Breath enters, draw a card, then choose a creature card name.
Whenever a creature you control with the chosen name attacks, you may pay {1}. If you do, create a token that's a copy of it and that's tapped and attacking, except it isn't legendary. Exile the token at the beginning of the end step.

Lifelink
Whenever a creature with power less than Kiri, Cloudwalker's power you control enters, you may pay {W}. If you do, you gain 2 life and draw a card.