I just bought the Dungeons and Dragons Legacy of the Crystal Shard campaign. What battle maps would I use with that?
Unlike prior efforts from Wizards of the Coast, Legacy of the Crystal Shard provides no battlemaps, or even any indication of the layout of areas where combats are likely to take place. So, use whatever maps you feel are appropriate to the situation, including drawing your own.
When I ran it, I simply borrowed some other maps I had that seemed roughly suitable. I'm afraid my collection of maps come from a number of Encounters seasons and other sources, so I'm not sure which is from which. However, I have a fairly generic map with a road running through some hills that I used for a number of the outdoor encounters. I also have a relatively generic cavern map I used for a number of the indoor encounters. I believe the map I used for the initial encounter was from Storm Over Neverwinter - a city wall at the edge of a town. There was also an encounter early on in an inn, for which I used a Gamemastery Tavern map.