The rest of the day was spent on improving the new ways that the teams had come up with to use the Rend skill. Mostly Karl worked on his control to keep a strand of it stationary, but they also worked on disguising the skill, as some monsters would recognize the Rend ability and have a trick to deal with it.
For example, some beasts with tusks could take the Rend directly and let it break against the tusk, doing little damage to their body. But if you made it look like a different skill, for example having the rend form not as a streak of energy but as a disc or a spear, it would confuse them, and they might not be able to deal with it.
Dana had done something similar during the fight, by dimming the light from her magic missiles. The small alterations to a spell could make just enough of a difference to get you through a tight spot or to get an edge on your competitors.