Vampirism? Touch of Death?
On maps with a lot of creatures, not only is Chaos boring, but nature also has fewer options than at the start.
No, I misunderstood. Chaos is just monotonous. It uses the same spells, but with different strengths, excluding things like Assassin, Blood Frenzy, Confusion, First Strike, and Cat's Reflexes. The rest simply become useless.