Walkthroughs for custom maps.

Someone mentioned that the appearance of a war machine in the tavern for a hero is as much a matter of chance as the appearance of one of the creature stacks. Even if the hero is a specialist in ballistas and we expect him to have one, it doesn't always appear. But this is specifically at the start of the game or when the hero first appears in the tavern. And if the hero has already been in battle and lost or fled, and then appears in the tavern, then if the ballista was destroyed in battle, it probably won't appear on its own (unlike the catapult, which will always appear, even after it has been destroyed). This needs to be verified with tests.