msem-instigator

Destroy target creature. Trigger a death knell of a permanent you control.

Menace

At the beginning of your upkeep, you may pay {U}. If you do, return Persistent Fiend from your graveyard to your hand.

Target creature can't block this turn.
Draw a card.

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

As Animus, Life's Entropy enters, choose a color.
You and Animus each have hexproof from the chosen color.
Attain {6} ({6}: Transform this. Spend at least three colors of mana to activate this, and only as a sorcery.)

Equipped creature gets +1/+1.
Whenever equipped creature becomes the target of a spell, you gain 3 life.
Equip {4}

When Walking Armory enters, return all Equipment cards from your graveyard to the battlefield, then attach them to Walking Armory.

Look at target opponent's hand. You may cast a card from that player's hand or graveyard, and you may spend mana as though it were of any type to cast that card. If you cast a card from that player's hand this way, that player draws a card.

Partner with Shizura, Keeper of Traditions (When this creature enters, target player may put Shizura into their hand from their library, then shuffle.)
Whenever Kasoha, Keeper of Truths or another legendary creature enters, scry 3, then draw a card.

Archive 3 (As this enters, shuffle the top three cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
Whenever you draw a card from the archived library, target creature you control can't be blocked this turn.

Whenever another nontoken creature you control enters, if it has a different name than each other creature you control and card in your graveyard, you may create a token that's a copy of it.

Create an 8/8 blue Kraken creature token.
{2}{U}, Discard Wealth of the Flood: Create a Treasure token. Scry 2.

If an opponent controls more lands than you, search your library for a Plains card. If an opponent controls more creatures than you, search your library for a creature card with mana value 2 or less. Reveal those cards, put them into your hand, then shuffle.

Enchant player
Whenever a creature enters under enchanted player's control, they lose 1 life.

Renown 2 (When this creature deals combat damage to a player, if it isn't renowned, put two +1/+1 counters on it and it becomes renowned.)
Whenever a creature you control becomes renowned, draw a card.

Ward—Pay 5 life.
Whenever Ensouled Savior deals combat damage while attacking, you get five glory counters. (You lose glory counters before life. A player with ten or more glory counters wins the game.)

At the beginning of your upkeep, you may put a +1/+1 counter on target creature.

Flying
When Delivery Bird enters, if you control an artifact, put a +1/+1 counter on another creature you control.

When Divine Shell enters, create three Function tokens with “Tap target creature.” (They're enchantments. As you cast an instant or sorcery spell, sacrifice any number of Functions to add their effects to that spell.)

Destroy target creature with power equal to its toughness.

Equipped creature has menace.
Whenever equipped creature attacks, look at the top two cards of your library. Put any number of them into your graveyard and the rest back on top of your library in any order.
Equip {2}

Flying
When Tengu Skyguard enters, return a permanent you control to its owner's hand.

Each creature you control that's enchanted or is an enchantment gets +1/+1.
{2}{W}{W}: You may reveal an enchantment card you own from outside the game and put it into your hand.

Put target tapped creature and all other creatures with the same name as that creature on the bottom of their owners' libraries.