Forum:Quick Question!

Okay, so a few friends and I have been running into situations where we're not sure if an effect will resolve if they monster leaves the field. I've been told that Lumina, Lightsworn Summoner for instance will not be able to complete her special summon if she is removed from the field after activating it, via Torrential Tribute or other such things, but I was wondering what the reasoning behind that is, and if it applies to effects like say XX-Saber Faultroll's effect for summoning a monster once per turn if its even correct at all.