msem-instigator

Scry 2. (Then exile this card. You may cast the creature later from exile.)

Equipped creature gets +1/+2 and has vigilance.
Equip {3}

Prowess
Libraries can't be searched.
Spells you cast cost {1} less to cast for each permanent you control but don't own.

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.

Reach
Spirited (When this creature enters, you may activate one of its activated abilities without paying its costs.)
{3}{G}: Exile up to one target card from a graveyard. Scry 1.

Target player sacrifices an enchantment. You gain 4 life.

Flying
At the beginning of your upkeep, reveal the top card of your library. If it's a creature card, create a 1/1 blue Bird creature token with flying.

Shadowcleft Hideout enters tapped.
{T}: Add {B}.
{T}, Pay 2 life, Sacrifice Shadowcleft Hideout: Draw a card.

Up to three target creatures can't block this turn.
Menagerie — If there are five or more creature types among creatures you control, exile the top three cards of your library. You may play one of those cards until the end of your next turn.

Cadence (Whenever you cast a spell, if its mana value is greater than this creature's power, put a +1/+1 counter on this creature.)
United Patrol can block an additional creature each combat.

Abyssal Crypt enters tapped.
{T}: Add {U} or {B}.
{2}{U}{B}, {T}, Sacrifice Abyssal Crypt: Draw a card.

Somber Meadow enters tapped.
{T}: Add {W} or {B}.
{1}, {T}: Add one mana of any color.

{T}, Pay 1 life: Add {G} or {W}.
{2}, {T}, Sacrifice Provincial Hamlet and another permanent: Draw a card. Activate only during your turn.

Target creature gains haste until end of turn. That creature attacks or blocks this turn if able.

At the beginning of each player's upkeep, sacrifice Hayuan, the Misjudged if that player controls a creature with power 2 or less.
When Hayuan dies, create X Idol tokens, where X is the number of creatures you control. (They're artifacts with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)

Flying, trample
Prismatic — Whenever you cast a multicolored spell, put a +1/+1 counter on Azure Caterwauler.

Enchant creature
Enchanted creature can't attack or block.
{3}{W}: Attach Cease Conflict to target creature.

Reveal the top seven cards of your library. Starting with you, each player chooses a nonland card from among them that hasn't been chosen this way. Put the chosen cards into your hand and the rest on the bottom of your library in a random order.

Create two 1/1 red Elemental creature tokens.

Sabotage — Whenever an opponent or permanent an opponent controls becomes the target of a spell you control, Artisan of Brutality gets +2/+0 and gains first strike until end of turn.

Whenever Almgrove Ambassador blocks or becomes blocked, you may untap target creature and remove it from combat.

{1}{G}: Target land you control becomes a 3/3 green Elemental creature until end of turn.
{1}{U}: Target enchantment you control becomes a 2/2 blue Nymph creature with flying until end of turn.

Mill three cards. Create a 1/1 black Skeleton creature token for each creature card milled this way. You draw a card and you lose 1 life for each noncreature card milled this way.

This spell costs {1} less to cast for each creature card in your graveyard.
Trample

When Woopip Sproutling enters, germinate. (Put a +1/+1 counter on a creature or create a 1/1 green Saproling creature token.)