'Same could be said of Rc, it is long but it takes no particular talent to run back and forth making runes. I think the hardest skill would be slayer, since you actually have to go out there and kill various monsters that have various strengths and weaknesses and strategy, so you simply cannot just do the same thing over and over and hope to do well in the skill, always changing what armor you have on you etc. Slayer isn't hard either, so what if you have to kill various monsters? Slayer is usually more fun for people. (Not myself personally.) How is killing monsters over and over again harder than running essence from Point A to Point B?