Benevolent Ancestor — ruling 1

If the target would be dealt damage by multiple sources at once, that player or that permanent’s controller chooses one of those sources at the time damage would be dealt, and 1 of that damage from that source is prevented.

Benevolent Ancestor : règles, fonctionnement et interactions (MTG)

Benevolent Ancestor 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

Defender (This creature can't attack.) : Prevent the next 1 damage that would be dealt to any target this turn.

How it works : Benevolent Ancestor

Original English text — Wizards of the Coast / Scryfall

#1November 17, 2017· Wizards of the Coast
If the target would be dealt damage by multiple sources at once, that player or that permanent’s controller chooses one of those sources at the time damage would be dealt, and 1 of that damage from that source is prevented.
No other card is named in this ruling.