msem-instigator

Prowess
Whenever Unseen Hand attacks, exile target noncreature, nonland card with mana value 1 or less from your graveyard. Copy that card. You may cast the copy. (You still pay its costs.)

Choose one —
• Target creature gets +2/+0 and gains first strike until end of turn.
• Destroy target artifact.

Resolute — Whenever Crackling Agama deals combat damage to a player, if Crackling Agama's power is greater than its base power, that player sacrifices an artifact or enchantment.

Whenever you cast a noncreature spell, put a quest counter on Align the Astrolabe.
At the beginning of your upkeep, create a 1/1 colorless Construct artifact creature token for each three quest counters on Align the Astrolabe.

Your opponents can't search libraries unless they pay {2}.
[+2]: If an opponent has more life than you, you gain 2 life.
[0]: If an opponent controls more creatures than you, you create two 1/1 white Gnome creature tokens.
[–4]: Search your library for a creature card with mana value 2, put it onto the battlefield, then shuffle.

When Foster the Future enters, create a 3/3 red Panda creature token.
Panda creatures and Mao planeswalkers you control have “+2: Target creature you control gains vigilance until end of turn” and “-4: Creatures you control get +1/+1 and gain trample until end of turn.”

Draw a card, then reveal any number of creature or land cards from your hand. You gain that much life.

Discard a card: Concealed Slasher gets +1/+1 until end of turn and can't be blocked this turn.

(Activate each ability only once as a sorcery. You gain the realm's favor after activating them all.)
{1}: Search your library for a legendary creature card, reveal it, put it into your hand, then shuffle.
{2}: Invigorate 5. (Choose a creature with the least power among creatures you control and put five +1/+1 counters on it.)
{3}: Draw cards equal to the greatest power among creatures you control.
Other permanents you control have hexproof and indestructible.

Whenever you sacrifice a permanent, Champion of Foibles becomes a Demon with base power and toughness 6/6, flying, and trample until end of turn.
{3}{B}: Judge target creature you control. Activate only as a sorcery. (Honor it by putting a +1/+1 counter on it or condemn it by sacrificing it to draw a card.)

First mate—Your starting deck contains one or more cards of exactly each color and each color pair. (If this card outside the game is your chosen first mate, you may swap it with a card in your opening hand.)
During each of your turns, you may cast a card of each color from your graveyard. If a spell cast this way would be put into your graveyard, exile it instead.

Whenever Masha's Vanguard deals damage to a player, you may put a creature card with mana value X or less from your hand onto the battlefield, where X is the amount of damage dealt this way.

Enchant creature
Whenever you cast a green spell, enchanted creature gets +2/+2 until end of turn.

Menace
Whenever you sacrifice an artifact or creature, Lava Scutterer deals 2 damage to any target.

Draw a card.

Improve {R} ({R}: 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 another creature you control with power less than or equal to Folkvar, Galdurheim Brawler's power attacks, Folkvar deals 1 damage to the player or planeswalker that creature is attacking and you gain 1 life.

When Humble Shepherd enters, create a 0/1 white Sheep creature token.
{T}, Tap an untapped Sheep you control: Add one mana of any color.

Poisonblade Trainee enters with a -1/-1 counter on it.

Exile up to two target creatures controlled by different players. Return those creatures to the battlefield under their owners' control at the beginning of the next end step.

Flying
Tap three untapped Satrapies you control: Recruit. Activate only as a sorcery. (Create a 0/0 white Soldier Army creature token, then put a +1/+1 counter on each Army you control.)

Exile target creature you control, then return it to the battlefield under its owner's control. Create a token that's a copy of it. Those creatures gain haste until end of turn. Sacrifice the token at the beginning of the next end step.

When Diviner of the Mists enters, target opponent chooses two cards in their hand and reveals one of them. Exile one of those cards. You may play that card for as long as it remains exiled, and spend mana as though it were mana of any color to cast it.

{2}, {T}: Create a Treasure token. (It's an artifact with “{T}, Sacrifice this permanent: Add one mana of any color.”)
{W}{U}{B}{R}{G}, {T}, Sacrifice Grim's Warchest: Exile target creature.

Flash
When Leafdown Ambusher enters, create three colorless artifact tokens named Arrow. They have “{T}, Tap an untapped creature you control, Sacrifice this permanent: The tapped creature fights target creature you don't control. Activate only as a sorcery unless this permanent entered this turn.”

Sunrazed Ruins enters tapped.
{T}: Add {W}.
{2/W}{2/W}: Sunrazed Ruins becomes a 2/3 white Elemental creature with lifelink until end of turn. It's still a land.