Firesong and Sunspeaker — ruling 1

The last ability of Firesong and Sunspeaker can't target a planeswalker or battle.

Firesong and Sunspeaker — ruling 2

A spell causes you to gain life if its cost or effect instructs you to gain life or if an instruction in its cost or effect is modified by a replacement effect and the modified event includes you gaining life. If a spell's cost or effect instructs a source with lifelink you control to deal damage, that spell causes that life gain as well.

Firesong and Sunspeaker — ruling 3

If a white instant or sorcery spell you don't control causes you to gain life, Firesong and Sunspeaker's last ability triggers.

Firesong and Sunspeaker — ruling 4

If you gain an amount of life "for each" of something, that life is gained as one event and Firesong and Sunspeaker's last ability triggers only once.

Firesong and Sunspeaker — ruling 5

If a source you control with lifelink deals damage to you, you gain and lose that much life simultaneously. Your life total doesn't change.

Firesong and Sunspeaker — ruling 6

If a red and white spell you control deals damage to multiple things using the word "deals" only once, Firesong and Sunspeaker's last ability triggers only once. Similarly, if a red and white spell's effect causes it to deal damage to one thing and then deal more damage with a second instance of the word "deals," Firesong and Sunspeaker's last ability triggers twice, and so on.

Firesong and Sunspeaker — ruling 7

If a red and white spell you control deals damage and also instructs you to gain life, Firesong and Sunspeaker's last ability triggers twice.

Firesong and Sunspeaker — ruling 8

Firesong and Sunspeaker's last ability doesn't trigger if a triggered ability of a white instant or sorcery spell or card causes you to gain life, such as the triggered ability of Renewed Faith when it's cycled.

Firesong and Sunspeaker : règles, fonctionnement et interactions (MTG)

Firesong and Sunspeaker 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

Red instant and sorcery spells you control have lifelink. Whenever a white instant or sorcery spell causes you to gain life, Firesong and Sunspeaker deals 3 damage to target creature or player.

How it works : Firesong and Sunspeaker

Original English text — Wizards of the Coast / Scryfall

#1April 14, 2023· Wizards of the Coast
The last ability of Firesong and Sunspeaker can't target a planeswalker or battle.
No other card is named in this ruling.
#2April 27, 2018· Wizards of the Coast
A spell causes you to gain life if its cost or effect instructs you to gain life or if an instruction in its cost or effect is modified by a replacement effect and the modified event includes you gaining life. If a spell's cost or effect instructs a source with lifelink you control to deal damage, that spell causes that life gain as well.
No other card is named in this ruling.
#3April 27, 2018· Wizards of the Coast
If a white instant or sorcery spell you don't control causes you to gain life, Firesong and Sunspeaker's last ability triggers.
No other card is named in this ruling.
#4April 27, 2018· Wizards of the Coast
If you gain an amount of life "for each" of something, that life is gained as one event and Firesong and Sunspeaker's last ability triggers only once.
No other card is named in this ruling.
#5April 27, 2018· Wizards of the Coast
If a source you control with lifelink deals damage to you, you gain and lose that much life simultaneously. Your life total doesn't change.
No other card is named in this ruling.
#6April 27, 2018· Wizards of the Coast
If a red and white spell you control deals damage to multiple things using the word "deals" only once, Firesong and Sunspeaker's last ability triggers only once. Similarly, if a red and white spell's effect causes it to deal damage to one thing and then deal more damage with a second instance of the word "deals," Firesong and Sunspeaker's last ability triggers twice, and so on.
No other card is named in this ruling.
#7April 27, 2018· Wizards of the Coast
If a red and white spell you control deals damage and also instructs you to gain life, Firesong and Sunspeaker's last ability triggers twice.
No other card is named in this ruling.
#8April 27, 2018· Wizards of the Coast
Firesong and Sunspeaker's last ability doesn't trigger if a triggered ability of a white instant or sorcery spell or card causes you to gain life, such as the triggered ability of Renewed Faith when it's cycled.
No other card is named in this ruling.