Jakob said: I use an attacher on dexterity saving throws to remind me of shield master goodies (they would totally be forgotten otherwise), and an attacher on all saving throws for my paladin due to aura of courage. I could just add the bonus to the saves directly, but this way, it also serves as a convenient reminder that everyone within 10 feet also gets to add the bonus to their saving throw. These are good examples. Shield master is a great example of conditional items that only apply sometimes (this is attacher's niche imo). For Paladin Aura of Courage I would recommend you always adding the saves on your paladin via "Bonuses & Penalties" and put the attacher on allies saves. "Add [[@{OTHERGUY|charisma_mod}]] if within 10 feet of @{OTHERGUY|character_name}" with all the saves toggled.