Attended Healer — ruling 1

Multiple instances of lifelink on the same creature are redundant.

Attended Healer — ruling 2

An ability that triggers “whenever you gain life” triggers just once for each life-gaining event, no matter how much life you gain.

Attended Healer — ruling 3

Each creature with lifelink dealing combat damage causes a separate life-gaining event. For example, if two creatures you control with lifelink deal combat damage at the same time, a “whenever you gain life” ability will trigger twice. However, if a single creature you control with lifelink deals combat damage to multiple creatures, players, and/or planeswalkers at the same time (perhaps because it has trample or was blocked by more than one creature), the ability will trigger only once.

Attended Healer — ruling 4

If you gain an amount of life “for each” of something, that life is gained as one event and the ability will trigger only once.

Attended Healer — ruling 5

In a Two-Headed Giant game, life gained by your teammate won’t cause the ability to trigger, even though it caused your team’s life total to increase.

Attended Healer — ruling 6

An ability that triggers whenever you gain life “for the first time each turn” won’t trigger if you gain life during a turn before the permanent with that ability is on the battlefield, even if you gain life again later in the turn.

Attended Healer : règles, fonctionnement et interactions (MTG)

Attended Healer 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

Whenever you gain life for the first time each turn, create a 1/1 white Cat creature token. : Another target Cleric gains lifelink until end of turn.

How it works : Attended Healer

Original English text — Wizards of the Coast / Scryfall

#1September 25, 2020· Wizards of the Coast
Multiple instances of lifelink on the same creature are redundant.
No other card is named in this ruling.
#2September 25, 2020· Wizards of the Coast
An ability that triggers “whenever you gain life” triggers just once for each life-gaining event, no matter how much life you gain.
No other card is named in this ruling.
#3September 25, 2020· Wizards of the Coast
Each creature with lifelink dealing combat damage causes a separate life-gaining event. For example, if two creatures you control with lifelink deal combat damage at the same time, a “whenever you gain life” ability will trigger twice. However, if a single creature you control with lifelink deals combat damage to multiple creatures, players, and/or planeswalkers at the same time (perhaps because it has trample or was blocked by more than one creature), the ability will trigger only once.
No other card is named in this ruling.
#4September 25, 2020· Wizards of the Coast
If you gain an amount of life “for each” of something, that life is gained as one event and the ability will trigger only once.
No other card is named in this ruling.
#5September 25, 2020· Wizards of the Coast
In a Two-Headed Giant game, life gained by your teammate won’t cause the ability to trigger, even though it caused your team’s life total to increase.
No other card is named in this ruling.
#6September 25, 2020· Wizards of the Coast
An ability that triggers whenever you gain life “for the first time each turn” won’t trigger if you gain life during a turn before the permanent with that ability is on the battlefield, even if you gain life again later in the turn.
No other card is named in this ruling.