Dungeons And Dragons Online: WotC News: Tactics and Tips: Manipulating the Battlefield (Part Two)

Control of the battlefield is key to assuring victory. With that in mind, we turn to another discussion of Tactics and Tips. Enemies getting a little close? Why not try a:

Tanglefoot Bag (Player's Handbook, page 128): A tanglefoot bag provides a good way to hinder a Large or smaller opponent's movement, spellcasting, or even ability to fly. This alchemical item is a must-have for parties that want more battle grid control. It costs a mere 50 gp and weighs 4 pounds, which makes it an excellent investment.

If that's just not your style, check out the article for other methods, including magical means.