Simple and small effects such as those would be just fine! Depending on his level of experience, he may notice that it seems a little more difficult to speed growth or healing in Adstringendum; but he would be able to get it working with practice.

It's likely that small efforts would go unnoticed by the Animus, considering the way time and space continue to be affected as a result of the compression. If he attempted anything dramatic, though, that might draw some attention....