(Dungeon + Necropolis) vs (Sylvan + Orcs)

Pyrokinesis deals 33.3% damage over 3 turns and only affects fire element spells. Vaishan, you also forgot about the wall of fire, which is a very useful spell; it will be unpleasant for a hidden archer to be trapped in a wall. However, if a Sylvan elf develops light magic (which is quite likely), they can simply teleport the unfortunate creature away. Another question is, will the wall appear for the warlock and the teleport for the elf? To reduce the defense of the Sylvan elf, the Fire Lord can also help. Even if it's only for one turn, it still helps. But the Sylvan elf also has a countermeasure: in light magic, there is a perk that provides fire resistance, reducing damage from fire magic by 50% and protecting against the Fire Lord. This tactic is more likely to be used to counter the enemy's tactics. It might even be worth upgrading the defense if it appears, so that the Sylvan elf's troops last longer while the Sylvan elf safely casts spells.