Drawmij's Instant Summons. You touch an object weighing 10 pounds or less whose longest dimension is 6 feet or less. The spell leaves an invisible mark on its surface and invisibly inscribes the name of the item on the sapphire you use as the material component. Each time you cast this spell, you must use a different sapphire.
Glyph of Warding. When you cast this spell, you inscribe a glyph that creates a magical effect triggered by other creatures, either upon a surface (such as a table or a section of floor or wall) or within an object that can be closed (such as a book, a scroll, or a treasure chest) to conceal the glyph. The glyph can cover an area no larger than 10 feet in diameter. If the surface or object is moved more than 10 feet from where you cast this spell, the glyph is broken, and the spell ends without being triggered.
I'm a bit bumfuzzled how these two interact. Is the phrase "moved more than 10 feet from where you cast this spell" referring to physical distance traveled over time? Or is it referring to distance between point A and point B being less than or equal to 10 feet? My reasoning is that teleportation could be understood as a folding of space-time, rather than actual distance traveled, thus circumventing the limitation.
Another angle could be whether or not Glyphs of Warding are in movement with reference to their surroundings, to the nearest astral body, or in the larger universe. Assuming that planets spin, the third point is moot, so it matters whether it's the difference in latitude and longitude on the face of its original casting point on a planet or if it's connected to a certain radius of material around it, enabling a flying castle to be warded. The second point raises the question of other planes that lack planets, but that'll be another question/conversation.
