There will be more data and proper atribution here (original author, steam link, original post date, etc) real soon, I promise. This is just like a technical test to see if they're coming in ok at all.
Magecraft » Update 0.7
We’ve added a new terrain system so that the map doesn’t always look like the same boring grass fields. Terrain is now dynamically generated for each run and has multiple types of terrain that have different effects when you or enemies step on them.
Has no effect, just like before.
Slightly slows you and other mobs when you step on it.
Slows you and other mobs substantially but slowly heals the player over time (and only the player).
Grants additional speed to both you and enemies.
Slows and deal damage over time to anything that steps on it.