msem-instigator

(Add a quest counter as this enters. Sacrifice after 3.)
Whenever you cast your first spell outside your main phase each turn, add a quest counter.
1, 2 — Draw cards equal to the number of quest counters on Siltbottom Expedition, then discard that many cards.
3 — Put up to two target instant or sorcery cards from your graveyard on top of your library in any order, then draw a card.

As an additional cost to cast this spell, put a -1/-1 counter on a creature you control.
Counter target spell.

{T}: Add {C}.
{T}, Pay 1 life: Add {R}.
{R}, {T}: Add one mana of any color.

Return any number of lands you control to their owner's hands. For each land returned this way, search your library for a land card, reveal it, then put it into your hand. Then shuffle.

When Flying Throne enters, attach it to target creature you control.
Equipped creature gets +1/+0 and has flying.
Equip {2}

Whenever Desperate Thief deals combat damage to a player, you may pay 2 life. If you do, draw a card.

As an additional cost to cast this spell, sacrifice an artifact or enchantment.
You draw three cards and you lose 3 life.

Haste
At the beginning of your end step, return Preying Mantis to its owner's hand.

Assault {1}{B} (Whenever this attacks, if it has no +1/+1 counters on it, you may pay its assault cost to put a +1/+1 counter on it.)
Whenever a creature you control assaults, you may have target creature get -2/-2 until end of turn.

Target opponent reveals their hand. You choose a nonland permanent card from it. That player discards that card.

(Activate each submodule once as a sorcery. When this enters, activate one submodule for free.)
{4}{G}: Recreate
Put two +1/+1 counters on each creature token you control.
{4}{U}: Reproduce
Draw a card for each noncreature token you control.
{3}{G}{U}: Repeat
Replication Module gains “At the beginning of your upkeep, you may create a token that's a copy of target token you control.”

Wu Xing (Add effects based on the number of colors of mana spent to cast this spell.)
1 | Each creature deals damage to itself equal to its power.
3 | You gain life equal to the excess damage dealt this way.
5 | Each opponent loses that much life.

{1}: Look at the top card of your library.
{G}, {T}, Mill a card: Untap another target creature.

Deathtouch
When Neophyte of the Old Gods enters, rediscover a sorcery card. (Look at the top card of your library. You may reveal it and put it into your hand if it's a sorcery card. Otherwise, put it back or into your graveyard.)

Primal {W} (During your turn, you may cast this spell for {W} instead of playing a land.)
When Captured Paletusk enters, you may search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle. You gain 2 life. Then sacrifice Captured Paletusk if it was cast for its primal cost.

When Verdict of the Council enters, exile up to one target creature until Verdict of the Council leaves the battlefield.
White creatures you control get +1/+0.

When Soul Jar enters, exile target creature and each other creature with the same name as that creature until Soul Jar leaves the battlefield.

Equipped creature gets +1/+0 and has deathtouch and “{T}: This creature deals 1 damage to target creature you don't control. Sacrifice Assassin's Shuriken.”
Equip {2}

Ornamented Evergreen enters tapped unless you have two or more opponents.
{T}: Add {G} or {W}.

({T}: Add {W}.)
Sacred Sanctuary enters tapped with two sanctum counters on it.
{T}, Remove a sanctum counter from Sacred Sanctuary: Add {G} or {U}.

Defender
When Mnemonic Wall enters, you may return target instant or sorcery card from your graveyard to your hand.

Whenever a Survivor you control enters, you may draw a card. If you do, discard a card.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I, II — War's Sorrow deals 1 damage to any target.
III — Each player sacrifices another permanent. Put War's Sorrow on top of its owner's library unless a player has it deal 3 damage to them.

Whenever a nontoken creature you control dies, you may exile it. If you do, create a token that's a copy of it except it's a 1/1 white Spirit creature in addition to its other types and colors.
{2}{B}, Sacrifice a creature: Each opponent loses 1 life and you gain that much life.

Other creatures you control get +1/+1.
As long as Nobility is in your graveyard and you control a white enchantment, creatures you control get +1/+1.