So, let's say that you are a wizard 15 / witch 2. You have the invocation of Lance of Lethargy, which pushes an enemy that you direct with an electric shock and returns you 10 feet. Let's say you put a demiplano entry about 5 feet behind the enemy you're aiming at. When you hit, you throw the enemy. Before all this, you had put a Glyph of Guard on one of the surfaces. What would be the limit for the trigger for this? Would it be forced to be tactile or proximity, or could it be based on something like hostility towards the launcher?
Page 245 of PHB
… When you cast this spell, you enter a glyph that then triggers a magical effect … You decide what the glyph triggers when you cast the spell. For glyphs inscribed on a surface, the most typical the triggers include touching or standing on the glyph, …
The keyword here is typical. According to Google's definition, the informal definition of the typical is
showing the characteristics expected or popularly associated with a particular person, situation or thing.
This means, if my assumption is true, that the triggers in the PHB are only the most common. Apart from being forced to a maximum of 10 feet in diameter in the PHB, I can not see a limit. Although I should probably assume that all this would be a discretion of the DM, (and I know it sounds like a broken record here), but it could be the trigger for hostility towards the pitcher, or something else, such as being a specific race, a genre, of a specific race place, etc., or would it be forced to be something of the PHB?