Clockwork Amulet

This copper amulet contains tiny interlocking
gears and is powered by magic from Mechanus, a
plane of clockwork predictability. A creature that
puts an ear to the amulet can hear faint ticking
and whirring noises coming from within.
When you make an attack roll while wearing the amulet, you can forgo rolling the d20 to get a 10
on the die. Once used, this property can’t be
used again until the next dawn.