Chaos magic. Is it necessary?

In reality, the first turn is the most important, and if a hero spends it charging arrows, time will be lost. The first spell should be the strongest – a mass speed boost or a punishing strike at the beginning of the battle can determine its outcome. Moreover, after casting mass spells, the hero only loses half of their initiative, meaning they can cast several light spells in a row. After that, chaos will be useless, or even harmful – in the heat of battle, spells will hit both enemies and allies.