Actually, Roland's random idea proved successful.
He was probably the first person who had ever cast Body Fortification, Swiftness, Intelligence Improvement, and other buffs on a rock.
The spinning speed of the same rock was different when it was ejected from the spatial bubble with certain buffs.
So, the buffs actually worked, though not quite effectively as expected.
Eventually, Roland put a magic shield on the testing rock.
As it turned out, the rock did not spin at all when it was ejected from the spatial bubble.
"It worked!" Roland was quite delighted.
Then, it was time to experiment with living creatures.
Returning to Delpon, he held back his disgust and grabbed three rats from the sewer.
The first rat was absorbed into a spatial bubble without any buff. It skyrocketed after it was squirted out. When it was about to crash, Roland picked it up with Hand of Magic.