Season 13 leveling is mostly about getting a build online early, then not fighting your own resource bar for the next 40 levels. Gear still matters, of course, and good D4 items can smooth out rough patches, but the real difference comes from picking skills that move fast, hit groups, and don't fall apart when a boss shows up. Some builds start strong right away. Others need a few levels before they feel good. That's worth knowing before you lock...