Skills for an Inferno hero.

What if I suddenly feel like choosing Luck as a skill to develop (just because I want to)? Am I supposed to wait until it appears? By the way, the chance of a defense skill appearing is equal to the demon's Luck stat. I've listed the necessary skills for a demon to play optimally. All five of these skills can be developed to a decent level. If you're playing on a small map, you physically won't be able to develop all five skills, regardless of whether you want to or not.