Gang of Devils — ruling 1

You divide the damage as you put Gang of Devils’s triggered ability on the stack, not as it resolves. Each target must be assigned at least 1 damage. (In other words, as you put the ability on the stack, you choose whether to have it deal 3 damage to a single target, 2 damage to one target and 1 damage to another target, or 1 damage to each of three targets.)

Gang of Devils : règles, fonctionnement et interactions (MTG)

Gang of Devils 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

When this creature dies, it deals 3 damage divided as you choose among one, two, or three targets.

How it works : Gang of Devils

Original English text — Wizards of the Coast / Scryfall

#1May 1, 2012· Wizards of the Coast
You divide the damage as you put Gang of Devils’s triggered ability on the stack, not as it resolves. Each target must be assigned at least 1 damage. (In other words, as you put the ability on the stack, you choose whether to have it deal 3 damage to a single target, 2 damage to one target and 1 damage to another target, or 1 damage to each of three targets.)
No other card is named in this ruling.