Jay didn't describe Wilson provided a whole new insight into the full rune system at Gamescom, but he gave examples of what the various Runes do with the [[Wizard]] skill [[Hydra]], which shows off the big changes made to the skill Runestones with a short quote from runestonesGamescom, in August 2010. [http://diablo.incgamers.com/blog/comments/jay-wilson-interview-g4tv/]

::'''Jay Wilson: '''One of my favorites is on the [[Wizard]]. She has a skill called [[Hydra]], which is largely the same as it was in Diablo 2. Fiery (dragon) heads that shoot fireballs. Depending on which rune the Wizard sockets in that skill, the dragon heads change elements, and it’s a major change. Their entire appearance is altered. They can become poison heads, which shoot bolts of poison that leave pools of acid on the ground. There are lightning heads that shoot [[Chain Lightning]]. Cold heads that shoot [[Frost Bolts]] that slow enemies. Another rune makes for a bigger fire attack, where the head just breaths a cone of flame.