Wards can be found throughout the world. They are found as glowing purple objects. You will play a mini-game where a cursor will loop around a ring and you must time hitting the button as the cursor goes over the top of the runes in places. As the runes get more difficult you must time your rune activation to be in flow as some runes offer less time until they deactivate. You'll also have to avoid the red runes or it will fail. Invest a few points into the Dispelling skill to make this a bit easier.
Runed objects can explode if you fail.