It was once said that feeding 10 one star hero’s of matching color for 20% chance of success of leveling the special skill gave the best chance of increasing the special skill. I always thought this manner of feeding was impractical because it took up too much space, and was not necessarily the “best way” to increase the special skill. After much research I can actually say that feeding 6 one star hero’s of matching color for 12% chance of success of increasing the special skill is the best practice for increasing special skill for 3,4,5 star heros. The data has finally been confirmed and I wanted to share this information for future players. Happy Feeding