Boseiju Reaches Skyward // Branch of Boseiju — ruling 1

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.

Boseiju Reaches Skyward // Branch of Boseiju — ruling 2

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.

Boseiju Reaches Skyward // Branch of Boseiju — ruling 3

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

Boseiju Reaches Skyward // Branch of Boseiju — ruling 4

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

Boseiju Reaches Skyward // Branch of Boseiju — ruling 5

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.

Boseiju Reaches Skyward // Branch of Boseiju — ruling 6

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.

Boseiju Reaches Skyward // Branch of Boseiju : règles, fonctionnement et interactions (MTG)

Boseiju Reaches Skyward // Branch of Boseiju 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 — Search your library for up to two basic Forest cards, reveal them, put them into your hand, then shuffle. II — Put up to one target land card from your graveyard on top of your library. III — Exile this Saga, then return it to the battlefield transformed under your control. Reach This creature gets +1/+1 for each land you control.

How it works : Boseiju Reaches Skyward // Branch of Boseiju

Original English text — Wizards of the Coast / Scryfall

#1February 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.
#2February 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.
#3February 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.
#4February 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.
#5February 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.
#6February 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.