Transforming Flourish — ruling 1

You choose whether to make a copy as the demonstrate ability resolves. This happens before the original spell resolves. Your copy goes on the stack above the original spell.

Transforming Flourish — ruling 2

If you copy a spell with demonstrate, you then immediately choose an opponent. If they copy the spell, it goes on top of the stack.

Transforming Flourish — ruling 3

If the spell requires targets, you choose the target of the original spell as you cast it. If you create a copy of the spell, you may choose new targets for the copy as you create that copy. Similarly, the opponent you chose to create a copy may choose new targets for that copy as it’s created. In other words, your opponent will know the targets of your original spell and your copy when choosing the new targets, if any, for their copy.

Transforming Flourish — ruling 4

If you cast a spell with demonstrate and both you and an opponent copy it, the opponent’s copy will resolve first, then your copy will resolve, and finally the original spell will resolve.

Transforming Flourish — ruling 5

If you cast the spell and choose not to copy it, no opponent will get to copy it either.

Transforming Flourish — ruling 6

If the destroyed permanent’s controller chooses to cast the exiled card without paying its mana cost, they can’t choose to cast it for any alternative costs. They can, however, pay additional costs, such as kicker costs. If the spell has any mandatory additional costs, those must be paid to cast the spell.

Transforming Flourish — ruling 7

If the exiled card has {X} in its mana cost, the destroyed permanent’s controller must choose 0 as the value of X when casting it without paying its mana cost.

Transforming Flourish : règles, fonctionnement et interactions (MTG)

Transforming Flourish 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

Demonstrate (When you cast this spell, you may copy it. If you do, choose an opponent to also copy it. Players may choose new targets for their copies.) Destroy target artifact or creature you don't control. If that permanent is destroyed this way, its controller exiles cards from the top of their library until they exile a nonland card, then they may cast that card without paying its mana cost.

How it works : Transforming Flourish

Original English text — Wizards of the Coast / Scryfall

#1April 4, 2025· Wizards of the Coast
You choose whether to make a copy as the demonstrate ability resolves. This happens before the original spell resolves. Your copy goes on the stack above the original spell.
No other card is named in this ruling.
#2April 4, 2025· Wizards of the Coast
If you copy a spell with demonstrate, you then immediately choose an opponent. If they copy the spell, it goes on top of the stack.
No other card is named in this ruling.
#3April 4, 2025· Wizards of the Coast
If the spell requires targets, you choose the target of the original spell as you cast it. If you create a copy of the spell, you may choose new targets for the copy as you create that copy. Similarly, the opponent you chose to create a copy may choose new targets for that copy as it’s created. In other words, your opponent will know the targets of your original spell and your copy when choosing the new targets, if any, for their copy.
No other card is named in this ruling.
#4April 4, 2025· Wizards of the Coast
If you cast a spell with demonstrate and both you and an opponent copy it, the opponent’s copy will resolve first, then your copy will resolve, and finally the original spell will resolve.
No other card is named in this ruling.
#5April 4, 2025· Wizards of the Coast
If you cast the spell and choose not to copy it, no opponent will get to copy it either.
No other card is named in this ruling.
#6April 4, 2025· Wizards of the Coast
If the destroyed permanent’s controller chooses to cast the exiled card without paying its mana cost, they can’t choose to cast it for any alternative costs. They can, however, pay additional costs, such as kicker costs. If the spell has any mandatory additional costs, those must be paid to cast the spell.
No other card is named in this ruling.
#7April 4, 2025· Wizards of the Coast
If the exiled card has in its mana cost, the destroyed permanent’s controller must choose 0 as the value of X when casting it without paying its mana cost.
No other card is named in this ruling.