In order to respec one Ascendancy skill point, you need five 5 refund points left.
Orb of Regret grants one refund points.

As the example shown below, it originally has 6 Refund Points Left. After respec one ascendancy skill, it now has 1 Refund Points Left.

You can only change Ascendancy in the same base class. The following is the Ascendancy class table.
| Class | Change Ascendancy between the same class | ||
|---|---|---|---|
| Duelist | ![]() Slayer |
![]() Gladiator |
![]() Champion |
| Shadow | ![]() Assassin |
![]() Saboteur |
![]() Trickster |
| Marauder | ![]() Juggernaut |
![]() Berserker |
![]() Chieftain |
| Witch | ![]() Necromancer |
![]() Elementalistin |
![]() Occultist |
| Ranger | ![]() Deadeye |
![]() Raider |
![]() Pathfinder |
| Templar | ![]() Inquisitor |
![]() Hierophant |
![]() Guardian |
| Scion | ![]() Ascendant |
||