msem-instigator

All creatures get -2/-2 until end of turn. If a creature an opponent controls would die this turn, exile it instead.

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

When March of the Unhallowed enters, mill three cards, then return a creature card with mana value 3 or less from your graveyard to the battlefield.
Whenever you attack with three or more creatures, each opponent loses 1 and you gain 1 life.

{T}: Draw a card, then discard a card. If you discarded an instant, sorcery, Pirate, or Rogue card this way, create a 1/1 blue Tentacle creature token with “This creature can't block.”

When this creature enters, put a -1/-1 counter on a creature you control.
Whenever you put one or more -1/-1 counters on one or more creatures, surveil 2.

This spell costs {2} less to cast if you've foretold a card from your hand this turn.
Whenever this creature enters or attacks, draw a card, then exile a card from your hand face down. It becomes foretold. (You can only cast it later if it has foretell.)

{1}{W}: Markov Fencer gains first strike until end of turn. You gain 1 life.

Until end of turn, target creature gets +3/+0 and gains “When this creature dies, return it to the battlefield tapped under its owner's control.”
Foretell {B} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Flying, double strike
Whenever Marzela Falkenrath deals combat damage to a player, create a 1/1 black and red Vampire creature token with menace.
{2}{B}: Vampires you control gain lifelink until end of turn.

Your opponents can't gain life.
If a source you control would deal damage to an opponent, it deals double that damage instead.
At the beginning of your end step, if Mayhem Tandem didn't attack this turn, transform it.

Return up to one target nonland permanent to its owner's hand. If you control a creature with flying, surveil 2.

Flash
Flying
When Mellan enters, exile up to one other target nonland permanent with mana value equal to or less than the number of creatures you control with flying until Mellan leaves the battlefield.

Vigilance
{2}, {T}: Target player mills two cards.

Siphon (Each -1/-1 counter you put on your creatures up to their remaining toughness while casting this pays for {1}.)
You gain X life and draw X cards, where X is the number of creatures that died this turn.

{B}, Sacrifice another creature: Surveil 1.

Reveal the top three cards of your library and put them into your hand. If this spell was cast from your graveyard, each opponent loses life equal to the total mana value of those cards. Otherwise, you lose that much life.
Flashback {4}{B}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flash
Enchant creature you control
Enchanted creature gets +2/+2.
Whenever enchanted creature attacks, if it's a Citizen or Peasant, create a 1/1 white Peasant creature token.

Siphon (Each -1/-1 counter you put on your creatures up to their remaining toughness while casting this pays for {1}.)
Create a token that's a copy of target creature you control, except it enters with an additional -1/-1 counter on it.

You may play an additional land on each of your turns.
Landfall — Whenever a land you control enters, draw a card.

You may play an additional land on each of your turns.
{4}{U}{U}: Transform Misthollow Rites. Activate only as a sorcery.

Other Spirits you control get +1/+1.
Whenever Mistmourner or another Spirit you control enters, you may draw a card. If you do, discard a card.

{T}: Add {G}.
Once during each of your turns, you may cast a creature spell from your graveyard if there are thirteen or more cards in your graveyard. (You still pay its costs. Timing rules still apply.)

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

Target player reveals their hand. You choose a nonland card from it. That player discards that card if it has mana value 2 or less or this spell was foretold.
Foretell {B} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Flash
When this enchantment enters, if you cast it, you may return target spell or nonland permanent to its owner's hand.
Whenever you cast your first spell during each opponent's turn, create a 1/1 white and blue Bird creature token with flying.