Well this is a weird one. Causality Reverse User has the ability to reverse the idea of cause and effect, so that the cause follows the effect rather than the other way around. The user is able to reverse the nature of causality to make it so the cause comes from the effect. The cause is merely a formality, as the effect has already happen before the cause has even started. The event looks completely normal to onlookers, as the cause lead to the effect, but the cause is simply an action meant to prove the fact that the effect was happened. This ability makes sure the users is always have advantages over their opponent as now everything has 100% chance of success and anything they do is permanent. That means no matter how agile, well defensive, or far away from the user, it is impossible to dodge, reverse or stop the effect as it is already written down in history. Your opponent is filled with an arrow before you even fire it, since the arrow lodging in their sternum is the effect, and the cause is letting it loose.