Backdraft Hellkite — ruling 1

If a card with no mana cost gains flashback, it has no flashback cost. It can't be cast this way.

Backdraft Hellkite — ruling 2

If a card has multiple instances of flashback, you may choose any of its flashback costs to pay.

Backdraft Hellkite — ruling 3

If a split card gains flashback, you pay only the cost of the half you're casting.

Backdraft Hellkite — ruling 4

"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."

Backdraft Hellkite — ruling 5

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.

Backdraft Hellkite — ruling 6

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.

Backdraft Hellkite — ruling 7

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

Backdraft Hellkite — ruling 8

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

Backdraft Hellkite : règles, fonctionnement et interactions (MTG)

Backdraft Hellkite 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

Flying Whenever this creature attacks, each instant and sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost.

How it works : Backdraft Hellkite

Original English text — Wizards of the Coast / Scryfall

#1March 19, 2021· Wizards of the Coast
If a card with no mana cost gains flashback, it has no flashback cost. It can't be cast this way.
No other card is named in this ruling.
#2March 19, 2021· Wizards of the Coast
If a card has multiple instances of flashback, you may choose any of its flashback costs to pay.
No other card is named in this ruling.
#3March 19, 2021· Wizards of the Coast
If a split card gains flashback, you pay only the cost of the half you're casting.
No other card is named in this ruling.
#4March 19, 2021· Wizards of the Coast
"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."
No other card is named in this ruling.
#5March 19, 2021· Wizards of the Coast
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.
No other card is named in this ruling.
#6March 19, 2021· Wizards of the Coast
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.
No other card is named in this ruling.
#7March 19, 2021· Wizards of the Coast
A spell cast using flashback will always be exiled afterward, whether it resolves, is countered, or leaves the stack in some other way.
No other card is named in this ruling.
#8March 19, 2021· Wizards of the Coast
You can cast a spell using flashback even if it was somehow put into your graveyard without having been cast.
No other card is named in this ruling.
#9March 19, 2021· Wizards of the Coast
If a card with flashback is put into your graveyard during your turn, you can cast it if it's legal to do so before any other player can take any actions.
No other card is named in this ruling.
#10March 19, 2021· Wizards of the Coast
If you cast an instant or sorcery with in its mana cost this way, you still choose the value of X as part of casting the spell and pay that cost.
No other card is named in this ruling.
#11March 19, 2021· Wizards of the Coast
If you cast a spell with flashback, you can't pay any alternative costs such as overload costs. You can pay additional costs such as kicker costs. If the spell has any mandatory additional costs, you must pay those to cast the spell with flashback.
No other card is named in this ruling.
#12August 23, 2019· Wizards of the Coast
Once Backdraft Hellkite has attacked, its ability will resolve and grant the appropriate cards flashback even if Backdraft Hellkite leaves the battlefield before the ability resolves or after it resolves but before you cast the spells.
No other card is named in this ruling.
#13August 23, 2019· Wizards of the Coast
Only instant and sorcery cards in your graveyard when Backdraft Hellkite's triggered ability resolves will gain flashback. Instant and sorcery cards that are put into your graveyard later in the turn won't gain flashback.
No other card is named in this ruling.