Summon Starlight

Summon Starlight has a casting
value of 6. If it is 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. If a unit
of Chaos Daemons is bathed in starlight,
it also suffers D3 mortal wounds.