msem-instigator

When 1-ST Thankless Companion enters the battlefield, draw a card.

Whenever you foretell a card or cast a foretold spell, you draw a card and you lose 2 life.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I, II, III — Audition for white. (Create a 1/1 Construct Actor creature token, a Scout Role giving 2/3 and vigilance, or a Cleric Role giving 2/2 and lifelink. Roles replace older ones.)
Distribute two +1/+1 counters among creatures you control.
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Equipped creature has vigilance. (Attacking doesn't cause that creature to tap.)
Equip {1}

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I, II — You may create a token that's a copy of target Aura you control. Attach it to target creature you control.
III — Put a +1/+1 counter on each enchanted creature you control. Those creatures gain indestructible and vigilance until end of turn.
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Draw a card.
Leitmotif (If you cast this spell from your hand, exile it as it resolves. When you next cast a spell that shares a color with this card, you may cast this from exile without paying its mana cost.)

Each opponent loses X life and you gain X life, where X is the number of Illusions you control.
Acquiesce (If you cast this spell from your hand, exile it as it resolves. When one or more creatures you control deal combat damage to an opponent, you may cast this card from exile without paying its mana cost.)

(Add a quest counter as this enters. Sacrifice after 3.)
Whenever you attack, add a quest counter.
1, 2 — Mill a card, then create a 1/1 black Peasant creature token.
3 — Each player sacrifices a creature.
Monument {2}{B}{B} (You may cast this transformed from your graveyard for its monument cost. Exile it if it would leave the battlefield or not resolve.)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I, II — Audition for blue. (Create a 1/1 Construct Actor creature token, a Wizard Role giving 2/2 and prowess, or a Warlock Role giving 2/1 and flying. Roles replace older ones.)
III — Whenever a creature you control deals combat damage to a player this turn, draw a card.
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Reprise {3}{B} (As you cast an instant or sorcery spell, you may exile one card with reprise from your graveyard and pay its reprise cost. If you do, add its effects to that spell.)
This spell deals 2 damage to target creature. You gain life equal to the total damage dealt by this spell.

Each player mills four cards.
Coalesce {5}{U}{U} (You may cast this from your graveyard for its coalesce cost. If you do, put it onto the battlefield as a Horror creature after it resolves. Exile it if it would leave the battlefield or not resolve.)
When A Vision Too Vast enters the battlefield, you may cast target noncreature, nonland card with mana value 4 or less from a graveyard without paying its mana cost.

When AOSE Extractor enters the battlefield, crystallize. (Put a +1/+1 counter on a creature you control or create a Treasure.)

Flying

At the beginning of your upkeep, you may pay 2 life. If you do, crystallize. (Put a +1/+1 counter on a creature you control or create a Treasure.)

As an additional cost to cast this spell, discard a card.
Draw two cards. Forebode. (Create a tapped colorless Omen artifact token with “{T}, Discard a card, Sacrifice this artifact: Draw a card.”)

At the beginning of your end step, if you're horrific, you draw a card and you lose life equal to the number of cards in your hand. (You're horrific as long as you've sacrificed a permanent or discarded a card this turn.)

Creature tokens you control have hexproof.
{3}{G}: Put a +1/+1 counter on target creature token.

Whenever you cast a noncreature spell, put a +1/+1 counter on Abjuration Savant. It gains flying until end of turn.
When Abjuration Savant dies, you gain life equal to its toughness.

Heretic (Whenever you cast a spell that doesn't share a color with this creature, it gets +1/+1 until end of turn.)
Discard a card: Abominable Mongrel gets +1/+1 and becomes the color of your choice until end of turn.

Trample
Whenever another Horror enters the battlefield under your control, put a +1/+1 counter on Abominable Xenoflora.

Whenever you make first contact, Abrasive Citizen gets +3/+0 until end of turn. (You make first contact the first time each turn you cast a spell with a name not in your graveyard or control already.)

Abrupt Explosion deals X damage to any target.
Metamorph {X}{R} (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.)

When Abura-no-Oni enters the battlefield, target player mills two cards.

When Abyssal Nightcaster enters the battlefield, each player exiles a card from their hand.
When Abyssal Nightcaster dies, you may play cards you don't own from exile this turn.

{B}, {T}, Discard a card: Search your library for a card, then shuffle and put that card on top. You lose 2 life.