Making forked lightning not casting instantly

[Arhowk]

I've been playing with this and haven't found a viable solution via object editor.. no matter what i do it still deals damage instantly. My solutions are

1) just put a fx on the target to emaluate a fireball explosion (im changing forked lightning to send out multiple fireballs)

2) base it off of a single missle ability and use triggers to cast the other missles

also, how do i disable/enable autocasting (like black arrow)

 

[Ender]

if you give the unit barrage, and an orb ability and searing arrows you can make a autocasting multishot spell.

To your 3rd problem, only autocast abilities can autocast(via the object editor)