msem-instigator

Put three +1/+1 counters on target creature you control. It voyages. (If it isn't blocking or targeted by another spell or ability, it phases out.)

Field of Obelisks enters tapped.
As Field of Obelisks enters, choose a color other than white.
{T}: Add {W} or one mana of the chosen color.

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.

Look at the top two cards of your library. Put one of them into your hand, then you may have any number of players each mill three cards.

Enchant creature
When Sting of the Manticore enters, scry 2.
Enchanted creature gets +1/+0 and has deathtouch.

Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom in any order. You gain 3 life.

Meandering Path enters tapped unless you control one or fewer other lands.
{T}: Add {R} or {G}.
Cycling {2} ({2}, Discard this card: Draw a card.)

(Activate each submodule once as a sorcery. When this enters, activate one submodule for free.)
{U}{U}{U}: Premise
Create a token that's a copy of target creature.
{U}{U}{U}: Inference
Tap all creatures target player controls. Those creatures don't untap during that player's next untap step.
{U}{U}{U}: Conclusion
Logic Module gains “Whenever a creature you control deals combat damage to an opponent, you may draw a card.”

At the beginning of your end step, if you cast no spells this turn, you may return Wrathful Meditant to its owner's hand.

Sparring Ground enters with a +1/+1 counter on it.
{T}: Add {C}.
Whenever a creature you control enters, you may move a +1/+1 counter from Sparring Ground onto that creature.

As an additional cost to cast this spell, sacrifice any number of creatures.
Target player loses 2 life for each creature sacrificed to cast Blood Lashing.

Return target creature card from your graveyard to the battlefield. If this spell was cast from a graveyard, you lose life equal to that creature's mana value.
Flashback {1}{B}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

This spell can't be countered.
Enchant land
At the beginning of combat on your turn, untap enchanted land. It becomes a 6/6 green Lizard creature with haste until end of turn. It's still a land.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Create two 1/1 white Human creature tokens.
II — Put a vigilance counter on target creature you control. It becomes a legendary God in addition to its other types.
III — Exile target creature an opponent controls that's a God or that has power 4 or greater.

Flash
Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
{1}: Remove target attacking creature you control from combat and untap it.

Creatures your opponents control get -1/-1 until end of turn. (Then exile this card. You may cast the creature later from exile.)

Exile up to two target artifacts, creatures, and/or enchantments you control. Return those cards to the battlefield under your control at the beginning of the next end step.

Lifelink

Return target creature card from your graveyard to your hand. If you control a Spirit, draw a card.

Flying
Sacrifice a creature: Shrieking Nightwing gets +1/+1 until end of turn.

{T}: Add {C}.
{1}, {T}, Tap an untapped creature you control: Add mana equal to that creature's mana cost.

Draw three cards.

First strike
{1}{R}: Hatsuo, Honored General and other Warrior creatures you control get +1/+0 until end of turn.

When Helvault, Shard of the Moon enters, for each player, exile up to one other target nonland permanent that player controls until Helvault, Shard of the Moon leaves the battlefield. When you exile a permanent you control this way, draw three cards.
{T}: Add {C}{C}{C}{C}{C}.
Cycling {2} ({2}, Discard this card: Draw a card.)

Counter target enchantment, instant, or sorcery spell. (Then exile this card. You may cast the creature later from exile.)