msem-instigator

Menace
Each opponent's maximum hand size is reduced by the number of counters on Fahrib's Lieutenant.
Whenever an opponent discards a card, put a +1/+1 counter on Fahrib's Lieutenant.

Exile target creature or planeswalker with mana value 4 or less.

When Faithless Deserter enters, you may sacrifice a creature. If you do, each opponent sacrifices a creature.

All creatures get -2/-2 until end of turn.
Metamorph {1}{B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up and cast it at any time for its metamorph cost.)

Whenever you draw a card, put a quest counter on Fallback Plan.
Remove four quest counters from Fallback Plan and sacrifice it: Search your library for a card, put that card into your hand, then shuffle.

Flying, lifelink
Fallen Celestial can't block or be blocked by Angels, Demons, or Faeries.
At the beginning of each opponent's upkeep, that player loses 1 life and creates a 1/1 black Faerie creature token with flying.

As an additional cost to cast this spell, sacrifice a creature.
Create three 1/1 black Worm creature tokens.

Enchant creature
Enchanted creature has flying and “Sacrifice a creature: This creature gets +2/+1 until end of turn.”
When Fallen Ideal is put into a graveyard from the battlefield, return Fallen Ideal to its owner's hand.

Exile target creature or planeswalker, then for each counter on that permanent, you may put a counter of that kind on a permanent you control.

Whenever you gain life, target opponent loses that much life.
{T}, Pay 3 life: Flip a coin. If you win the flip, you gain 6 life.

Each player returns up to one creature card from their graveyard to their hand. Each opponent sacrifices a creature.

This spell costs {3} less to cast if it targets a creature with mana value 2 or less.
Destroy target creature.

Exile target creature. Its controller loses 3 life.

Choose one —
• Exile all creature tokens.
• Exile target creature or planeswalker.
• Each opponent exiles a card from their hand and loses 2 life.

Each player sacrifices a creature. Purge. (Exile two cards that share a type from graveyards. If you do, draw a card.)

Destroy target creature or planeswalker with mana value 2 or less. Create a tapped Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)

This spell costs {1}{B} less to cast if you've cast a spell from anywhere other than your hand this turn.
Destroy target creature or planeswalker.

Enchant creature
Embody (Enchanted creature is a copy of this card except for its types.)
Whenever Fate of the Weary becomes tapped, create a 0/1 black Spirit creature token with flying.

Search your library for a card, reveal it, then shuffle and put that card on top. You lose life equal to its mana value.

When Fatethief dies, put the bottom card of your library into your hand.
Revive {2}{B}{B} ({2}{B}{B}, Exile this card from your graveyard: Create a token that's a copy of it except it has no mana cost. Revive only as a sorcery.)

Faux, Who Lives for the Hunt enters as a copy of a creature card in your graveyard except it's legendary and has changeling and “When this creature dies, if it didn't have a bounty counter on it, return it to the battlefield with a bounty counter.” (It has “When this creature dies, each opponent draws a card” as long as it has a bounty counter on it.)

You draw two cards and you lose 2 life.
Inscribe {3}{B}{B} ({3}{B}{B}: 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.)

Wu Xing (Add effects based on the number of colors of mana spent to cast this spell.)
1 | Mill five cards. An opponent separates the milled cards into two piles. Put one pile into your hand.
5 | You may cast a nonland card from the other pile without paying its mana cost.

Create a 3/2 colorless Horror creature token. All other creatures get -3/-3 until end of turn.

Each player sacrifices a creature. Create a tapped 2/2 black Zombie creature token.