Spiritcall Enthusiast // Scrollboost — ruling 1

As an effect causes a creature with a prepare spell to become prepared (including effects that state that a creature "enters prepared"), that creature's controller creates a copy of that creature's prepare spell in exile. That copy remains in exile for as long as that permanent is on the battlefield and is prepared. That creature's controller may cast that copy as long as it remains in exile. As they cast it, that creature stops being prepared.

Spiritcall Enthusiast // Scrollboost — ruling 2

If an effect instructs you to choose a card name, you may choose the alternative prepare spell's name. Consider only the alternative characteristics to determine whether that is an appropriate name to choose.

Spiritcall Enthusiast // Scrollboost — ruling 3

Preparation cards can only be cast with their base characteristics.

Spiritcall Enthusiast // Scrollboost — ruling 4

A creature with a prepare spell can't become prepared more than once at the same time. For example, Emeritus of Ideation is on the battlefield and is prepared. When it attacks, its last ability triggers. When that ability resolves, its controller may still exile eight cards from their graveyard, but doing so won't cause Emeritus of Ideation to become prepared a second time or create a second copy of Ancestral Recall in exile.

Spiritcall Enthusiast // Scrollboost — ruling 5

Being prepared isn't a copiable value. If a permanent becomes a copy of a prepared creature, it won't be prepared. That permanent will have the alternative characteristics, though, and some other effect could cause it to become prepared later.

Spiritcall Enthusiast // Scrollboost — ruling 6

If a prepare spell with one or more targets has no legal targets when it tries to resolve, it won't resolve and none of its effects will happen. Since the spell was cast, the associated permanent will still not be prepared.

Spiritcall Enthusiast // Scrollboost — ruling 7

Only the current controller of a prepared creature can cast the copy of its prepare spell in exile. It doesn't matter who owns that creature or who controlled it when it became prepared.

Spiritcall Enthusiast // Scrollboost — ruling 8

Casting a copy of a prepare spell from exile isn't casting it for an alternative cost. Effects that allow you to cast a spell for an alternative cost or without paying its mana cost may allow you to apply those to a copy of a prepare spell cast from exile.

Spiritcall Enthusiast // Scrollboost : règles, fonctionnement et interactions (MTG)

Spiritcall Enthusiast // Scrollboost is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Whenever one or more tokens you control enter, this creature becomes prepared. (While it's prepared, you may cast a copy of its spell. Doing so unprepares it.) One or two target creatures each get +2/+2 until end of turn.

Complete guide

Spiritcall Enthusiast // Scrollboost is a versatile new addition to token-based strategies, utilizing the unique 'Prepare' mechanic. This Cat Cleric allows you to double down on your board presence by granting you a powerful sorcery effect every time you create tokens. By mastering how to manage its preparation state, you can keep your creatures buffed and ready for combat.

Understanding Prepare

Spiritcall Enthusiast features a Prepare spell called Scrollboost. When you control a creature with a Prepare spell and the required condition is met—in this case, one or more tokens entering the battlefield under your control—the creature becomes 'prepared'. This creates a copy of the Scrollboost spell in exile. You may cast this copy from exile by paying its mana cost ({1}{W}) as long as the Enthusiast remains on the battlefield. Once you cast the spell, the creature becomes unprepared and can be prepared again by a future token entry.

Resolution and Timing

When the preparation ability triggers, the creation of the spell copy happens immediately upon resolution. The copy of Scrollboost stays in exile indefinitely as long as Spiritcall Enthusiast is on the battlefield. You must still follow normal timing rules for the spell; since Scrollboost is a sorcery, you can only cast it during your main phase while the stack is empty. If the Enthusiast leaves the battlefield before you cast the spell, the copy in exile ceases to exist.

Common Pitfalls

A common mistake is thinking you can stack multiple prepared spells. A creature cannot be prepared more than once at a time. If you create a token while Spiritcall Enthusiast is already prepared, the ability triggers but does nothing upon resolution—you won't get a second copy of Scrollboost. Additionally, remember that Scrollboost requires one or two targets; if you cast it and all targets become illegal before it resolves, the spell fails, and the Enthusiast still becomes unprepared.

When to Play It

Spiritcall Enthusiast is best played in decks that can generate tokens at will, especially during the main phase. Because the +2/+2 buff from Scrollboost lasts until end of turn, you want to time your token generation to prepare the Enthusiast, then cast Scrollboost before moving to combat to maximize the damage potential of your board.

Interaction examples

Triggering Preparation

Solemn Simulacrum

You have Spiritcall Enthusiast on the battlefield. You cast Solemn Simulacrum. When it enters, its ability triggers, allowing you to put a basic land token onto the battlefield. As that token enters, Spiritcall Enthusiast's ability triggers. When it resolves, the Enthusiast becomes prepared, and you create a copy of Scrollboost in exile, ready to be cast during your main phase.

Doubling the Value

Roaming Throne

You control Roaming Throne with 'Cat' or 'Cleric' chosen as the creature type. When a token enters the battlefield, Spiritcall Enthusiast's ability triggers twice thanks to Roaming Throne. The first trigger resolves, making the Enthusiast prepared and creating a Scrollboost copy in exile. The second trigger resolves, but since the Enthusiast is already prepared, it does nothing. You can then cast Scrollboost to unprepare the Enthusiast, allowing it to be prepared again by the next token you create.

Guide written with AI from the official text and rulings. Official English text prevails.

How it works : Spiritcall Enthusiast // Scrollboost

Original English text — Wizards of the Coast / Scryfall

#1March 20, 2026· Wizards of the Coast
As an effect causes a creature with a prepare spell to become prepared (including effects that state that a creature "enters prepared"), that creature's controller creates a copy of that creature's prepare spell in exile. That copy remains in exile for as long as that permanent is on the battlefield and is prepared. That creature's controller may cast that copy as long as it remains in exile. As they cast it, that creature stops being prepared.
No other card is named in this ruling.
#2March 20, 2026· Wizards of the Coast
If an effect instructs you to choose a card name, you may choose the alternative prepare spell's name. Consider only the alternative characteristics to determine whether that is an appropriate name to choose.
No other card is named in this ruling.
#3March 20, 2026· Wizards of the Coast
Preparation cards can only be cast with their base characteristics.
No other card is named in this ruling.
#4March 20, 2026· Wizards of the Coast
A creature with a prepare spell can't become prepared more than once at the same time. For example, Emeritus of Ideation is on the battlefield and is prepared. When it attacks, its last ability triggers. When that ability resolves, its controller may still exile eight cards from their graveyard, but doing so won't cause Emeritus of Ideation to become prepared a second time or create a second copy of Ancestral Recall in exile.
No other card is named in this ruling.
#5March 20, 2026· Wizards of the Coast
Being prepared isn't a copiable value. If a permanent becomes a copy of a prepared creature, it won't be prepared. That permanent will have the alternative characteristics, though, and some other effect could cause it to become prepared later.
No other card is named in this ruling.
#6March 20, 2026· Wizards of the Coast
If a prepare spell with one or more targets has no legal targets when it tries to resolve, it won't resolve and none of its effects will happen. Since the spell was cast, the associated permanent will still not be prepared.
No other card is named in this ruling.
#7March 20, 2026· Wizards of the Coast
Only the current controller of a prepared creature can cast the copy of its prepare spell in exile. It doesn't matter who owns that creature or who controlled it when it became prepared.
No other card is named in this ruling.
#8March 20, 2026· Wizards of the Coast
Casting a copy of a prepare spell from exile isn't casting it for an alternative cost. Effects that allow you to cast a spell for an alternative cost or without paying its mana cost may allow you to apply those to a copy of a prepare spell cast from exile.
No other card is named in this ruling.
#9March 20, 2026· Wizards of the Coast
A creature without a prepare spell can't become prepared.
No other card is named in this ruling.
#10March 20, 2026· Wizards of the Coast
A preparation card is a creature card in every zone. For example, while it's in your graveyard, Emeritus of Ideation is a blue creature whose mana value is 5. It can't be the target of Zealous Lorecaster's triggered ability ("When this creature enters, return target instant or sorcery card from your graveyard to your hand.").
No other card is named in this ruling.
#11March 20, 2026· Wizards of the Coast
If an effect causes a creature to become unprepared, a prepared creature stops being prepared and the associated copy of its prepare spell in exile ceases to exist. If it wasn't prepared at that time, nothing happens.
No other card is named in this ruling.
#12March 20, 2026· Wizards of the Coast
If a prepared creature stops being a creature, it will still be prepared, and the copy of its prepare spell will remain in exile. That permanent's controller will still be able to cast it. The same is true if a prepared creature becomes a copy of something else, even if it's then a permanent without a prepare spell.
No other card is named in this ruling.
#13March 20, 2026· Wizards of the Coast
If a prepared creature loses all abilities, it won't stop being prepared, and nothing will happen to its alternative characteristics or to the copy of its prepare spell in exile.
No other card is named in this ruling.
#14March 20, 2026· Wizards of the Coast
While copies of spells in zones other than the stack cease to exist when state-based actions are checked, this does not apply to copies of prepare spells in exile that were created as a creature became prepared.
No other card is named in this ruling.
#15March 20, 2026· Wizards of the Coast
Creating a copy of a creature's prepare spell in exile ignores copy exceptions applied to that creature that would affect the copiable values of that spell. For example, say a player casts Croaking Counterpart (a sorcery that says "Create a token that's a copy of target non-Frog creature, except it's a 1/1 green Frog.") targeting Goblin Glasswright. The token copy of Goblin Glasswright will enter prepared as a 1/1 green Frog creature, but the copy of Craft with Pride in exile will still be a red sorcery. The copy of Craft with Pride won't be green, a creature, or a Frog, and it won't have power or toughness.
No other card is named in this ruling.