Ozai, the Phoenix King — ruling 1

Mana from firebending abilities isn't lost until you leave combat and go to your second main phase. It can be used at any time during combat, even after combat damage has been dealt.

Ozai, the Phoenix King — ruling 2

Multiple instances of firebending on the same creature trigger separately, each granting you the appropriate amount of mana.

Ozai, the Phoenix King — ruling 3

Any other mana you add during combat will still be lost as normal when moving between steps of combat.

Ozai, the Phoenix King — ruling 4

If unspent mana has any restrictions or riders associated with it (for example, if it was produced by White Lotus Hideout), those restrictions or riders will remain associated with that mana when it becomes red.

Ozai, the Phoenix King — ruling 5

As long as Ozai, the Phoenix King is on the battlefield, you'll keep unspent mana as steps and phases end (although it will become red). This means you can add mana and spend it during a future step, phase, or turn. Once Ozai leaves the battlefield, you have until the end of the current step or phase to use the mana before it disappears.

Ozai, the Phoenix King — ruling 6

Firebending abilities aren't mana abilities. They use the stack and can be responded to.

Ozai, the Phoenix King — ruling 7

"Firebending N" is a keyword that represents the ability "Whenever this creature attacks, add N {R}. Until end of combat, you don't lose this mana as steps end."

Ozai, the Phoenix King : règles, fonctionnement et interactions (MTG)

Ozai, the Phoenix King 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

Trample, firebending 4, haste If you would lose unspent mana, that mana becomes red instead. Ozai has flying and indestructible as long as you have six or more unspent mana.

How it works : Ozai, the Phoenix King

Original English text — Wizards of the Coast / Scryfall

#1October 2, 2025· Wizards of the Coast
Mana from firebending abilities isn't lost until you leave combat and go to your second main phase. It can be used at any time during combat, even after combat damage has been dealt.
No other card is named in this ruling.
#2October 2, 2025· Wizards of the Coast
Multiple instances of firebending on the same creature trigger separately, each granting you the appropriate amount of mana.
No other card is named in this ruling.
#3October 2, 2025· Wizards of the Coast
Any other mana you add during combat will still be lost as normal when moving between steps of combat.
No other card is named in this ruling.
#4October 2, 2025· Wizards of the Coast
If unspent mana has any restrictions or riders associated with it (for example, if it was produced by White Lotus Hideout), those restrictions or riders will remain associated with that mana when it becomes red.
No other card is named in this ruling.
#5October 2, 2025· Wizards of the Coast
As long as Ozai, the Phoenix King is on the battlefield, you'll keep unspent mana as steps and phases end (although it will become red). This means you can add mana and spend it during a future step, phase, or turn. Once Ozai leaves the battlefield, you have until the end of the current step or phase to use the mana before it disappears.
No other card is named in this ruling.
#6October 2, 2025· Wizards of the Coast
Firebending abilities aren't mana abilities. They use the stack and can be responded to.
No other card is named in this ruling.
#7October 2, 2025· Wizards of the Coast
"Firebending N" is a keyword that represents the ability "Whenever this creature attacks, add N . Until end of combat, you don't lose this mana as steps end."
No other card is named in this ruling.