msem-instigator

Vigilance

{T}: Add {G}.
{1}{G}, {T}: Return target land card from your graveyard to the battlefield tapped.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Put a prowess counter on target creature you control. That creature deals 2 damage to each opponent.
II — Scry 3.
III — Until end of turn, if you casting an instant or sorcery spell causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

I — Exile target creature an opponent controls until The Banishment of Seh'a leaves the battlefield.
II — Exile up to three cards from target opponent's graveyard.
III — You gain life equal to the number of cards in exile.

Equipped creature gets +1/+0 and has first strike.
{1}{R}: Equipped creature gets +1/+0 until end of turn.
Equip {2}

When Hinasa Lorekeeper enters, create a 2/2 colorless Spirit creature token.
Colorless creatures you control have vigilance.

Whenever Hadik's Striker is dealt damage, you gain that much life.

When Dread Elk dies, put a +1/+1 counter on target creature you control. If that creature is a Zombie, put two +1/+1 counters on it instead.
Foreshadow {5}{B} (You may cast this spell for its foreshadow cost. If you do, also trigger its “dies” abilities when it enters.)

Prevent all combat damage that would be dealt by non-Spirit creatures this turn.

At the beginning of your end step, any number of target players mill three cards.
{5}{U/B}, {T}: You may cast target instant or sorcery card from an opponent's graveyard without paying its mana cost. Activate only as a sorcery.

Lifelink
Whenever a creature without a bounty counter on it dies, you may pay 1 life. When you do, post a bounty on target creature. (Put a bounty counter on that creature. It has “When this creature dies, each opponent draws a card” as long as it has a bounty counter on it.)

Search your library for a basic land card, reveal it, put it into your hand, then shuffle. Mill three cards.

Whenever equipped creature attacks, choose target creature defending player controls. Destroy that creature at end of combat.
Equip {4}

Return target permanent card from your graveyard to your hand. If it's an enchantment card, create a 2/2 black Zombie creature token.

Flourishing Swamp enters tapped.
As Flourishing Swamp enters, choose a basic land type.
Flourishing Swamp is the chosen type in addition to its other types.

Whenever you cast a spell, sacrifice a permanent and draw a card.
Exile three cards from your graveyard: Counter target noncreature spell unless its controller pays {1}.

Sacrifice a creature: Look at the top card of target player's library. You may have that player put that card into their graveyard.

Exile target creature. That creature's controller reveals cards from the top of their library until they reveal a creature card. That player puts that card onto the battlefield, then shuffles the rest into their library. If you own that card, it enters with an additional X +1/+1 counters on it, where X is its power.

Whenever another creature you control dies, you may pay {1}. If you do, scry 1. (To scry 1, look at the top card of your library. You may put that card on the bottom of your library.)

Deploy 4 (As this enters, you may tap any number of other creatures you control with total power 4 or more.)
When Mechanical Tactician enters deployed, tap up to two target creatures an opponent controls. Those creatures don't untap during their controller's next untap step.

Whenever a creature you control enters, create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)
{2}, Sacrifice an Idol: Creatures you control get +1/+1 until end of turn.

Target creature gets +1/+1 until end of turn for each creature token you control.
Put the bottom card of your library into your hand.

Take an extra turn after this one. Exile Again.
Fuse (You may cast one or both halves of this card from your hand.)

Enchant player
Whenever a creature enters under enchanted player's control, they lose 1 life.

Whenever another creature you control enters, you may have it gain haste. If you do, return it to its owner's hand at the beginning of the next end step.