User blog comment:FrankieX98/The future members of the Issei's harem and peerage./@comment-36663391-20181211195250/@comment-36663391-20181211200454

For now we don't know if Ingvild can use the bloodline's ability or have a demoniac powers that is superior to Rias and the high class or even be at same level of Vali. I believe that Ingvild's power before get the bishop's traits should be near ultimate class or even great, I remember that Rossweisse said that is not easy mind controlled Ingvild thanks her energy. I believe that perhaps the water manipulation of her blood can help she to get more affinity with her Longinus.