An angel of nobility wouldn't have this problem of being repelled by the repelling barrier because the Vassal Maker divine ability doesn't require contact for it to work.
Just the words of the angel of nobility assigning someone or something like the crown as a Vassal will be enough. The repelling barrier can't block the power of their words.
But got slavers like them, they need to make contact with the crown in one way or another, either physically or mentally, before the mark of slavery can take root and enslave the target. So, without a way to overcome the repelling barrier, they would never be able to enslave it.
After thinking about what to do with their Cognitive Adaptation divine ability pushed to its limit, Legion came up with a feasible solution. This solution was to use the Mindscape to bypass the barrier.
