Action Boost

(Eberron Campaign Setting, page 47, DnD 3.5)

[General]

You have the ability to alter your luck drastically in dire circumstances.

Benefit

When you spend an action point to alter the result of an attack roll, a skill check, an ability check, a level check, or a saving throw, you roll d8s instead of d6s and add the result to the d20 roll