How does the Monks Radiant Sun Bolt interact with Spell Sniper?

Demiplane inside demiplane

The focus/component/free hand distinctions are difficult to tease out

Can PC attune & use an unidentified magic item?

A creature has had it’s hit points reduced to 0 by a Specter and has been revivified. Do they need to be able to benefit from a long rest in order to have their hit point maximum increase again?