Inventive Iteration // Living Breakthrough — ruling 1

Living Breakthrough's triggered ability will resolve before the spell that caused it to trigger. Notably, the ability has no effect until it resolves, so your opponents can respond to it by casting instant spells with the same mana value as the original spell.

Inventive Iteration // Living Breakthrough — ruling 2

Living Breakthrough's triggered ability won't affect spells that a player has already cast, even if those spells haven't resolved yet.

Inventive Iteration // Living Breakthrough — ruling 3

Each face of a transforming double-faced card has its own set of characteristics: name, types, subtypes, abilities, and so on. While a transforming double-faced permanent is on the battlefield, consider only the characteristics of the face that's currently up. The other set of characteristics is ignored.

Inventive Iteration // Living Breakthrough — ruling 4

Each transforming double-faced card in this set is cast face up. In every zone other than the battlefield, consider only the characteristics of its front face. If it is on the battlefield, consider only the characteristics of the face that's up; the other face's characteristics are ignored.

Inventive Iteration // Living Breakthrough — ruling 5

The mana value of a transforming double-faced card is the mana value of its front face, no matter which face is up.

Inventive Iteration // Living Breakthrough — ruling 6

The back face of a transforming double-faced card usually has a color indicator that defines its color.

Inventive Iteration // Living Breakthrough — ruling 7

A transforming double-faced card enters the battlefield with its front face up by default, unless a spell or ability instructs you to put it onto the battlefield transformed or you cast it transformed, in which case it enters with its back face up.

Inventive Iteration // Living Breakthrough — ruling 8

If you are instructed to put a card that isn't a double-faced card onto the battlefield transformed, it will not enter the battlefield at all. In that case, it stays in the zone it was previously in. For example, if a single-faced card is a copy of Azusa's Many Journeys, the chapter III ability will cause it to be exiled and then remain in exile.

Inventive Iteration // Living Breakthrough : règles, fonctionnement et interactions (MTG)

Inventive Iteration // Living Breakthrough 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

(As this Saga enters and after your draw step, add a lore counter.) I — Return up to one target creature or planeswalker to its owner's hand. II — Return an artifact card from your graveyard to your hand. If you can't, draw a card. III — Exile this Saga, then return it to the battlefield transformed under your control. Flying Whenever you cast a spell, your opponents can't cast spells with the same mana value as that spell until your next turn.

How it works : Inventive Iteration // Living Breakthrough

Original English text — Wizards of the Coast / Scryfall

#1February 18, 2022· Wizards of the Coast
Living Breakthrough's triggered ability will resolve before the spell that caused it to trigger. Notably, the ability has no effect until it resolves, so your opponents can respond to it by casting instant spells with the same mana value as the original spell.
No other card is named in this ruling.
#2February 18, 2022· Wizards of the Coast
Living Breakthrough's triggered ability won't affect spells that a player has already cast, even if those spells haven't resolved yet.
No other card is named in this ruling.
#3February 18, 2022· Wizards of the Coast
Each face of a transforming double-faced card has its own set of characteristics: name, types, subtypes, abilities, and so on. While a transforming double-faced permanent is on the battlefield, consider only the characteristics of the face that's currently up. The other set of characteristics is ignored.
No other card is named in this ruling.
#4February 18, 2022· Wizards of the Coast
Each transforming double-faced card in this set is cast face up. In every zone other than the battlefield, consider only the characteristics of its front face. If it is on the battlefield, consider only the characteristics of the face that's up; the other face's characteristics are ignored.
No other card is named in this ruling.
#5February 18, 2022· Wizards of the Coast
The mana value of a transforming double-faced card is the mana value of its front face, no matter which face is up.
No other card is named in this ruling.
#6February 18, 2022· Wizards of the Coast
The back face of a transforming double-faced card usually has a color indicator that defines its color.
No other card is named in this ruling.
#7February 18, 2022· Wizards of the Coast
A transforming double-faced card enters the battlefield with its front face up by default, unless a spell or ability instructs you to put it onto the battlefield transformed or you cast it transformed, in which case it enters with its back face up.
No other card is named in this ruling.
#8February 18, 2022· Wizards of the Coast
If you are instructed to put a card that isn't a double-faced card onto the battlefield transformed, it will not enter the battlefield at all. In that case, it stays in the zone it was previously in. For example, if a single-faced card is a copy of Azusa's Many Journeys, the chapter III ability will cause it to be exiled and then remain in exile.
No other card is named in this ruling.