D&D 5e (2024)

Source: Arcana Unleashed

Level 8 Divination (Wizard)

Casting Time: Reaction, which you take when you fail a D20 Test or when a creature hits you with an attack roll
Range: Self
Components: V, S
Duration: Instantaneous

You have a powerful sixth sense that guides you at just the right time. Turn the roll of your failed D20 Test into a 20, or turn the roll of the triggering attack roll into a 1.