Forked Bolt — ruling 1

You divide the damage as you cast Forked Bolt, not as it resolves. Each target must be assigned at least 1 damage. (In other words, as you cast Forked Bolt, you choose whether to have it deal 2 damage to a single target, or deal 1 damage to each of two targets.)

Forked Bolt : règles, fonctionnement et interactions (MTG)

Forked Bolt 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

Forked Bolt deals 2 damage divided as you choose among one or two targets.

How it works : Forked Bolt

Original English text — Wizards of the Coast / Scryfall

#1June 15, 2010· Wizards of the Coast
You divide the damage as you cast Forked Bolt, not as it resolves. Each target must be assigned at least 1 damage. (In other words, as you cast Forked Bolt, you choose whether to have it deal 2 damage to a single target, or deal 1 damage to each of two targets.)
No other card is named in this ruling.