When an opposing army brings in the big weapons, your kingdom has no choice but to ante up or fold - and a trained Battle Mage from the Guild of Arcane Combatants if nothing if not a big weapon. But what happens your generals and their generals have a common goal?
Magical forests are never a good place to sleep, especially seeing as much of the population is nocturnal. Firewood taken from the wrong tree can turn against its collectors, and a strangling onslaught of angry twigs and branches can be surprisingly severe and difficult to disentangle yourself from. Fires themselves attract enemies, and not only malevolent predators. Giant moths and gloomwings are tempted by the heat and light, but are often misunderstood.