Posted on : 30-04-2010 | By : Brian | In : 4th Edition, D&D, DM's Journal, Downloads, GMing Methodology, House Rules, Links, Tips
The DMG 2 introduced the concept of terrain powers. These are pretty much what they sound like: they’re effectively environmental effects structured as powers, to make them easier and clearer to use. I like the system quite a bit, and actually utilized some props to encourage their use in my last session. To encourage the players to use these powers, I printed out power cards for them. This allowed them to see just what a terrain power could do before they used it, and allowed them to weigh cost versus reward. I tended to err on the potent side for terrain powers (since they can be used by either side), but I also tended to make them limited in their ability to be used; that is, most were single-use, while others had a limited-use mechanic.
Overall, it worked fairly well; the players used the terrain powers, and they used them to very good effect. There was one thing missing, though: my monsters never really used the terrain powers, because I forgot to. While the players had a handy visual reminder of what they could do with the terrain, I had neglected to give myself one; as the DM, I had a lot of powers to keep track of, and without something to remind me that they were there, I tended to focus on what my monsters could do by themselves. There is, I realized, a very simple solution to this problem: put the terrain powers right in the monster stat blocks.
Thanks to the Monster Builder, it’s easy enough to modify monster stat blocks and to copy terrain powers from one monster to another. Having terrain powers in the monster stat blocks acts as a handy reminder of what tactics are available to your monsters, as well as a good reference for how powerful those powers are in relation to their own. You can also use this technique to remind yourself of specific tactical tendencies of monsters. If you’re running a combat with a lot of different terrain powers, it’s easy enough to only put the powers in a given stat block that that monster is likely to use. Is there a mounted ballista that does less damage than your artillery monster’s own weapon? It doesn’t need that power. The skirmisher or brute might, though, until the PCs close the distance. Zombies aren’t likely to utilize the environment a lot, but orcs and goblins probably will, and you can bet your bottom dollar that kobolds will.
Here is a very simple example, an encounter from my last session that I modified after the fact. I encourage you to experiment with this technique, and I also encourage you to share your results and modifications here on this blog.