Prophetic Manipulation: At the end of your turn, as a free action you may choose an opposing character and a friendly character, both within 8 squares of Libra. When that opposing character attacks that friendly character before your next turn, you may have that attack roll be rerolled once per turn.

Uniting Leader: If Libra is the highest point friendly character on the map, modify his attack value by +1.

Does Prophetic Manipulation count as Probability Control?
No. Even though it can be used to reroll dice, it is not Probability Control. This means that Libra can still use Themed Team Probability Control, but it also means that he can't use Prophetic Manipulation as a prerequisite for feats.