The army in Dungeon isn't the main thing. The army is just an addition to the hero, so there's someone to kill while he's casting spells like Cold Rings and Earth Shocks. But a properly developed Warlock is a monster. With Sorcerer's Luck, Chaos Magic, Earth Tap, Amulet of Mastery, or Amulet of Frozen Embrace, and 20+ Magic Power... The damage from a single Earth Shock can be up to 5k... The main thing is not to forget about Mana Attraction so that the mana doesn't run out at the wrong time...