Recently our party encountered the "blessing" of Enervation. The description of Energy Drain and Negative Levels doesn't mention if class features are influenced. Spellcasting is also a little unclear.
From what I've gathered, spell variables that are reliant on damage and quantity are changed (d6s for Fireball, how many projectiles you get for Magic Missile, etc), but access to higher level spells remains unaffected (IE a lv11 caster reduced to lv8 can still fire 5th and 6th level spells with reduced effectiveness). Is this correct?
With regards to class features, would imposing negative levels change the amount of damage a character inflicts via their Sneak Attack? Would negative levels modify what options are available to a druid using Wild Shape? Are feats and class features that rely on actually being at a certain level be completely offline until the negative levels are removed?
As always, clarification is appreciated.