As long as the nerf comes in the form of exchanging the runes for Spirit with rarer runes, rather than a direct nerf to its stats. If we wanted to keep the stats the same entirely, then:
- Make Spirit require 2 Io runes instead of Tal and Ort runes
- Add varying stats for +1-2 all skills and +30-35% for each of the current available resistances to Cold, Lightning and Poison