I had Wisdom of Norgannon in hand and cast Feral Rage (Choose One: +4 attack, +8 armor). Feral Rage was generated by Molten Rune. I thought Feral Rage would count as Nature and discount WoN by one. It did not, presumably because it replaced itself with the school-less Evolve Scales. Seems like a bug? I know Evolve Scales has no spell school, but I cast Feral Rage, which does.
I don’t think Feral Rage has a spell school
If the card does not say “Nature” then it is not a nature spell.
Why did you think that? It doesn’t say Nature at the bottom.
Just because it’s a Druid class spell, doesn’t automatically mean it’s a Nature spell…