Ignite Disorder — ruling 1

The number of targets chosen for Ignite Disorder must be at least 1 and at most 3. You divide the damage as you cast the spell, not as it resolves. Each target must be assigned at least 1 damage.

Ignite Disorder — ruling 2

You divide the damage as you cast Ignite Disorder, not as it resolves. Each target must be assigned at least 1 damage.

Ignite Disorder — ruling 3

The number of targets must be at least 1 and at most 3.

Ignite Disorder : règles, fonctionnement et interactions (MTG)

Ignite Disorder 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

Ignite Disorder deals 3 damage divided as you choose among one, two, or three target white and/or blue creatures.

How it works : Ignite Disorder

Original English text — Wizards of the Coast / Scryfall

#1October 1, 2009· Wizards of the Coast
The number of targets chosen for Ignite Disorder must be at least 1 and at most 3. You divide the damage as you cast the spell, not as it resolves. Each target must be assigned at least 1 damage.
No other card is named in this ruling.
#2February 1, 2009· Wizards of the Coast
You divide the damage as you cast Ignite Disorder, not as it resolves. Each target must be assigned at least 1 damage.
No other card is named in this ruling.
#3February 1, 2009· Wizards of the Coast
The number of targets must be at least 1 and at most 3.
No other card is named in this ruling.