Amulet of the Moon

This amulet has 1d4+1 charges. The charges can be used in one of two ways:

1)  Before any die roll, the user can expend one charge to make the roll at advantage.

2)  After any die roll, the user can expend one charge to re-roll.  The user must take the second result.

When the final charge is expended, the amulet becomes an inert, non-magical silver amulet worth 50gp

Notes: Anyone, Buff, Jewelry