Reverberation — ruling 1

If used on a sorcery which does damage to multiple creatures and/or players, it will cause that player to take damage equal to the sum of all damage inflicted by the spell.

Reverberation : règles, fonctionnement et interactions (MTG)

Reverberation 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

All damage that would be dealt this turn by target sorcery spell is dealt to that spell's controller instead.

How it works : Reverberation

Original English text — Wizards of the Coast / Scryfall

#1October 4, 2004· Wizards of the Coast
If used on a sorcery which does damage to multiple creatures and/or players, it will cause that player to take damage equal to the sum of all damage inflicted by the spell.
No other card is named in this ruling.