[discussion] What if in the place of RBD Subaru got power nullification instead?

Everything that makes contact with Subaru loses all their supernatural property.

So he can straight up punch regulus and bypass his invulnerability.

He can't have authority nor use any magic, or form contract with spirits, but everything that was cast against him simply vanishes away as soon as they hit him.

Do you have a blessing? He touches you now you don't anymore, you'll stay a normal human until his hand leaves your shoulder, then you gain your powers back.

Throw a mountain made out of mana ice? He simply walks through it, leaving behind a human sized hole.

He isn't superhuman thought, just an average athletic fella, with quick reaction time for the average humans.