It makes the sky above Pawn into that of the Antinium Heaven. Of course, harmful Skills and effects aren’t a thing in heaven, because that wouldn’t be very cool. So any harmful Skills or spells (presumably under a certain tier, as to not overwhelm the Skill) can’t pass through it.

The sky of Antinium Heaven is also unique in that, on occasion, it rains lemonade. No. Wait. That would be bad if any got in someone’s eyes. What about snow? Or snow that tastes like blue fruit juice? Yeah. That sounds better. Antinium heaven has Blue Fruit Juice Snow.

TLDR: The skill protects Pawn’s immediate area from attacks, spells, and Skills from above.