Just pulled Kalvalax today and decided to take him for a spin. I knocked four seconds off of my fastest time and none of my runs go above 24 seconds. Kalvalax does not need more than a couple of pieces of acc gear but I fully geared him with a slight amount of speed so he would use his A1 to extend the poisons. I use this exact same team for dragon 25 and it does a 1:09 at the most.