Sudden Block (Su)

As an immediate action, you can expend one use of mythic power to hinder a melee attack made against you or an adjacent ally. Add your tier to your AC or the ally’s AC against this attack. The creature making the attack must make two attack rolls and take the lower result. Once the attack is resolved, you or your ally (your choice) can make one melee attack against the creature. The damage from this attack bypasses all damage reduction.