msem-instigator

Target creature gains lifelink until end of turn. Untap that creature.
Inscribe {1}{W} ({1}{W}: 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 Kemono-no-Oni: Return target creature card from your graveyard to your hand.

Put a +1/+1 counter on target creature.
Flashback {1}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Menace
When this creature enters, put a -1/-1 counter on a creature you control.

Siphon (Each -1/-1 counter you put on your creatures up to their remaining toughness while casting this pays for {1}.)
Return target creature or planeswalker card from your graveyard to the battlefield. Each opponent loses 3 life.

Archive X, where X is the number of planeswalkers you control. (As this enters, shuffle the top X cards of your main library into a new face up library. Sacrifice this when the archived library is empty.)
Remove a loyalty counter from a planeswalker you control: Draw a card from the archived library.

{T}: Add {C}.
{1}, {T}: Add {B}{G}.

Menace
Crew 3
You may exile two creature cards from your graveyard rather than pay Phantom Walker's crew cost.

Creatures you control get +1/+1 and gain first strike until end of turn.

Wharf Lumper can't be blocked by creatures with greater power.
Whenever Wharf Lumper attacks, mill a card. If that card was an instant or sorcery, Wharf Lumper gets +3/+0 until end of turn.

Trample
Shapen, Spiteful Creation must be blocked each combat if able.
The first time Shapen, Spiteful Creation would be dealt damage each turn, prevent that damage.

Archive 2 (As this enters, shuffle the top two 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 gains vigilance and indestructible until end of turn.

Whenever another creature or enchantment you control enters, you gain 1 life.
{3}{W}{W}, Pay 5 life: Castigated Sister becomes a 5/5 Angel Horror with flying. (This effect doesn't end at end of turn.)

{2}{G}: Look at the top three cards of your library. You may reveal a creature or Revelation card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Counter target spell. Tap all lands that spell's controller controls and that player loses all unspent mana.

Choose three. You may choose the same mode more than once.
• Put a +1/+1 counter on up to one target creature you control, then you may have it fight target creature you don't control.
• Target player creates a 2/2 green Lizard creature token.
• You mill four cards and gain 4 life.

Whenever you put one or more -1/-1 counters on a creature, put that many charge counters on Cycle of Scars.
Remove three charge counters from Cycle of Scars: Copy target instant or sorcery spell you control. You may choose new targets for the copy.

When Frantic Efreetspeaker enters, you may discard a card. If you do, draw a card.
{2}, Exile Frantic Efreetspeaker from your graveyard: Create a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)

When Barking Irons enters, if it's not a token, create a token that's a copy of it.
Equipped creature gets +2/+0.
Equip {2}

When Goblin Twinblades enters, create a 1/1 red Goblin creature token.

Scry 3, then reveal the top card of your library. Target creature gains trample and gets +X/+X until end of turn, where X is that card's mana value.

{2}{U}{B}, Sacrifice a creature: Return target creature card from your graveyard to the battlefield with a finality counter on it. It gains myriad. (Whenever it attacks, for each opponent other than defending player, you may put a token that's a copy of this creature onto the battlefield tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

Flying
When Blackblood Feaster enters, you may have each player sacrifice a creature.
Pay 2 life: Blackblood Feaster gets +2/+2 until end of turn. Activate only once each turn.

When Impatient Busker enters, you may put a lore counter on target Saga.