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What does pyrokinesis do? I seem to have forgotten. A lucky wizard is extremely useful, but getting this skill has become much more difficult for the Warlock... In principle, you can try to level it up, but first, try it in single-player mode. I haven't been able to level up a wizard without sacrificing other skills. Regarding tactics (meaning the skill from the attack line) – if you're going against a Sylvan faction, I wouldn't recommend it, as their troops are quite proactive; they're more likely to reach you than you reaching them. It's better to increase speed with artifacts, especially since the Dungeon faction has three cool units that can reach the enemy (or fly to them) even without a speed bonus. The chance of a defensive skill appearing is also 2%, so it's unlikely you'll level it up. You can choose Sinister as your hero (a cool specialization + he starts with the Magic Bolt spell), or Vayish (he starts with Luck and, most importantly, 25-30 scouts that can be quickly upgraded to aces or rangers, which greatly simplifies clearing the area).