Encoded Spell

You encode a spell onto the page of vellum used as this spell's material component. The spell must be one you know, must be of a level you can cast, and you must expend a spell slot of the spell's level to do so. This grants a layer of magical toughness to the vellum; it has 11+the spell's level AC, is waterproof, and has hit points equal to 1+the spell's level.  While the page remains intact, you can send a telepathic command to it, triggering the spell as if you had cast it at a target or targets of your choice(no action required).