Forum:Effects that aren't treated as effects

How does one know that an effect isn't treated as an effect? For instance, I just learned the hard way that a monster sent to the graveyard by Apoqliphort Towers' effect isn't treated as being sent to the graveyard by a monster effect or any effect for that matter.TheJayman213 (talk • contribs) 14:39, November 2, 2014 (UTC)