I think I already know the answer for this. But if I'm wrong let me know. Chaos spawn are classified as beast but are also slow and purposeful. They are also mindless which I guess in 5th ED would be rage. So they must roll 2 d6, take the highest and move to closest visible enemy unit. I understand that part. Here's the part I'm not 100% clear on. Being beast they gain fleet, 1d6. But beast assault at 12 inches. So, they roll 2d6 take the highest and double the result when determining assault range. I know its in the rule book and one can figure it out by putting the different rules together. I just need to know if there are other rules out there that say otherwise.