Thread:OmegaDragonite/@comment-25526540-20141111220156/@comment-13970942-20141119133629

^Hate to interfere (ah who am I kidding, you know I love it), but secondary effects of jutsu, are no different from natural effects. So, if I use great fireball technique, that is a jutsu and a chakra construct. After it explodes (ending the effect) the flames might ignite and feed off of flammable materials. Those flames would be a secondary effect, and would be no different from naturally occurring or man-made fire.

A different example: If I created a large amount of water, and a character drowned in it due to suffocation, the drowning would not be a supernatural effect of the water or the jutsu- it's just a side-effect.

I find it's easiest to figure out whether something is a primary or secondary effect based on the "degree of separation" between the origin of the effect and its result. So, in the case of great fireball, the origin is a character performing fire release and moulding his chakra into a specific configuration, before expelling it from his mouth. The "duration" and "influence" of the jutsu is therefore: A fire effect in the shape of a moving sphere, with the precondition that it explodes on impact with a surface. Once the jutsu stops being fire, stops being in the shape of a sphere, or impacts with a surface and explodes, the jutsu's primary effect is over.

After 14 years of excruciating arguments over spell effects, I have basically hammered this out. Hope my suggestion is helpful to you.