I entered 20 into the field and chain lightning hit 20 targets, so it worked for me. See if you can make chain lightning hit more than 16 targets in a test map. If you can, then there would be something else in your map causing the problem, and if you can't then the problem would be with getting it to hit more than 16 targets.
Max amount of targets is 21 no matter even with shift for if it is past 21 then the hero just acts like its paused and its control panel goes away and wc3 blows up.
Yet again, if you want more then 21 targets, you can always trigger a chain lightning spell from scratch..
Not really that hard... If ya need directions ,tell me.
I do know this - xenforo dropped the ball by not keeping the vbulletin reputation comments as a feature. The loss of the Reputation comments data when we switched to Xenforo really was the death knell for the site when it came to all the users that left. I know I missed it so much and I got way less interested in the site when that feature was gone and I run the site.
I'm on a page about incorrect corrections, and spent the better part of like two hours trying to get someone to understand that -5^2 = -25, not 25, and then that post had comments get reposted because that group is self sustaining, and that person was in turn trying to explain what I just explained to them. And I'm taking that as a victory