Haas' 18th level feat choice got me thinking...
So, could you chain a chain missile spell to hit multiple primary targets and use the secondary missiles to bounce continuously off each target for multiple hits?
Example: A 20th level caster like Haas chains a chain missile at a wizard and his 10 cohorts. The wizard takes 10d4+10 and his cohorts each take 1d4+1. He chains the spell to hit the other 10 cohorts, so do they all take 10d4+10 plus an additional 1d4+1 for each new primary target? If I'm doing the math right, couldn't you conceivably use that spell and that feat to do 100d4+100 to all 10 opponents?