Moment of Glory
When you roll initiative, also roll a d4 and record the result. As a free action, you can add the result to a single attack roll made by one of your nearby allies later this battle. (It’s a free action, so you can add the result after seeing the roll.)
You can also add the d4 result to a save or dicey-move roll made by an ally.
Roll a d6 instead of a d4.
In addition to the d6 you roll with initiative, roll a d4. You can also use that roll the same way, but not during the same turn you use the d6 result.