Can the Clockwork Amulet be used for all actions that require an attack? (melee, ranged, spells, etc)

Can the Clockwork Amulet be used for all actions that require an attack? Can it be used for melee, ranged attacks, spells that cause damage, any monster attack?

Because for me it is not obvious, for example, (from the lore side) that the Mechanus will affect attacking spells that cause damage.