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...I think that if you're playing as Chaos, it's inconvenient to play very close to your opponent because the tiles can affect your own units, and significantly so... Ultimately, you can get the most out of Chaos with Sylvan by using tiles, and single spells aren't as effective.
...and what's the point of taking Sorcery? If you use Rain and cast a spell on an arrow, Sorcery doesn't work. If you cast a single spell (without enchanting the arrow), then Sorcery will work (in short, it's an unnecessary ability).
If you want to cast spells quickly, then collect the Archer's Dream set.
Regarding an attack of 42, it's difficult to get that much of this characteristic. It requires a lot of time and luck. You also have a hero from the campaign, and he's level 35. I can imagine how the archers are performing there.