#dalittlecomputerbug

Ok so... based only in the name I was going to suggest Ice Manipulation, Freezing or Winter Manipulation, but Obsidian is a volcanic gem, so maybe something like Thermal Resistance could work as well?

Snowflake Obsidian is also a stone of purity, it brings peace and balance to the mind and body and it seems to keep us aware of both life and death (x), so perhaps Death Sense, Aura Reading, Danger Intuition, Necromancy, Future Vision or Paralysis Inducement might work!

Hope this helps!