According to the rules of Spell Scrolls, launching a scroll requires no other material component than the parchment itself. Similarly, the rules in Xanathar's Guide to Writing a Spell Scroll indicate that you must supply the hardware components at the time of creation.
Indeed. But there are some spells that have an unusual relationship with their material components. For example:
- change of plane requires a tuning fork specific to the target plane
- The instant convocation of Drawmij enchants the sapphire component to be summoned by crushing.
- Secret chest of Leomund requires a trunk and its replica, one of which is sent to the ethereal plane, and the other serves to recall it or send it back.
How do these (and other) spells work when they are written in a scroll of spells?
I can guess that one change of plane scroll can be inherently linked to a single target plane according to the tuning fork used at the time of writing. So you do not have airplane offset scroll as much as one plane shift roller to the elementary plane of the air (or something like that); but in other cases, the components are not destroyed by the process of creation of the parchment; so it looks like you need scrolling. and the component (s) used in its creation to be able to use the parchment, which is rather contrary to the very notion of scrolling of spells. Is it just the DM to find something?