Oracle

Sorcery 

Create a Treasure token. (It's an artifact with "T, Sacrifice this artifact: Add one mana of any color.")
Flashback 2R (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Tournooi-info

Legal in: Vintage, Legacy, Modern, Commander

Officiele rulings

2021-06-18 - wotc
"Flashback [cost]" means "You may cast this card from your graveyard by paying [cost] rather than paying its mana cost" and "If the flashback cost was paid, exile this card instead of putting it anywhere else any time it would leave the stack."

2021-06-18 - wotc
You must still follow any timing restrictions and permissions, including those based on the card's type. For instance, you can cast a sorcery using flashback only when you could normally cast a sorcery.

2021-06-18 - wotc
To determine the total cost of a spell, start with the mana cost or alternative cost (such as a flashback cost) you're paying, add any cost increases, then apply any cost reductions. The mana value of the spell is determined only by its mana cost, no matter what the total cost to cast the spell was.

2021-06-18 - wotc
A spell cast using flashback will always be exiled afterward, whether it resolves, is countered, or leaves the stack in some other way.

2021-06-18 - wotc
You can cast a spell using flashback even if it was somehow put into your graveyard without having been cast.

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