Ring of Borrowed Time

This ring allows the user to briefly go back in time and correct past mistakes. Once per day, whenever you make an attack roll, an ability check, or a saving throw, you can use the ring to re-roll the die even after the result has been determined. 

Curse

The time this ring grants the user must eventually be paid back a millionfold. Upon use, the user must make a DC10 CON check, failing the check gives the user a point of exhaustion. In addition, every time it's used, the user ages years depending on their race in the table below:

<table>
<tr>
<th>Race</th>
<th>Years</th>
</tr>
<tr>
<td>Human, Dragonborn, Half-orc</td>
<td>1d4</td>
</tr>
<tr>
<td>Half-elf, Halfling</td>
<td>2d4</td>
</tr>
<tr>
<td>Dwarf, Gnome</td>
<td>2d6</td>
</tr>
<tr>
<td>Elf</td>
<td>2d10</td>
</tr>
</table>

History 

A dying wizard created this ring in order to extend her life before succumbing to a rapidly growing illness. In the end, she only managed to save seconds of her life rather than the years she hoped for.

Notes: Long Rest, Control, Utility, Cursed, Jewelry