Can Imperial Decree allow a single 4 might unit to deal 1 damage to each of four 4 might units to wipe the battlefield, or must lethal damage be assigned to one unit before moving to the next?

Ruling: You cannot use Imperial Decree to spread 1 damage to multiple units to wipe them. You must assign lethal damage to an individual unit before moving on to the next one.

Nuances:

• When assigning damage, Imperial Decree has not triggered yet, so the damage assignment rules require lethal damage to each unit sequentially.