| 9/15/2013 |
You divide the damage as you cast the spell, not as it resolves. Each target must be assigned at least 1 damage. |
| 9/15/2013 |
If some but not all of Boulderfall's targets become illegal, you can't change the division of damage. Damage that would have been dealt to illegal targets simply isn't dealt. |
| 9/15/2013 |
If an effect creates a copy of Boulderfall, the division of damage and number of targets can't be changed. The effect that creates the copy may allow you to change targets, however. |
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