"If successfully cast, pick a unit within 20" to be bathed in starlight. If the unit is Seraphon, subtract 1 from the hit rolls of any attacks that target it until your next hero phase. Otherwise, subtract 1 from the hit rolls of any attacks that it makes until your next hero phase." Does this mean that if the unit is Seraphon you can only subtract hit rolls against that unit and not subtract 1 from hit rolls that it makes? I originally thought you could choose between them but the wording sounds like if it is Seraphon, it can only be the first option.