702.8. Overpayment for Cost [No Penalty]: A player pays a cost overpaying its power or energy cost.
702.8.a. Errors of this sort are generally public, and all players are expected to be mindful of game state.
702.8.b. Remedies:
702.8.b.1. If a cost is overpaid and it is still the turn where the cost was paid, the overpaying player is considered to have the extra resources floating in their resource pool.