Readings of Damnation

If {b}{b}{b}{b} was spent to cast this, choose
a name, then target opponent chooses a name,
then you choose another name. Destroy each
creature with any of the chosen names.
If {r}{r}{r}{r} were spent to cast this, this deals 8
damage split between up to 4 target permanents.
For each 4 mana spent to cast this, create a 5/5
black Demon creature token with flying.