Hey there, I think this wowhead article does a good job of explaining how the system works: https://www.wowhead.com/guide/item-upgrade-system-dragonflight

As for adventure gear, it mostly upgrades with either flightstones and whelpling crests. If memory serves, I think you can get that gear from rare mobs and running heroic dungeons.

Poor thing wasn’t even getting the thyme of day.

Today has been the past nostalgia day ever, better drink my own piss.

Sokka was awesome, he was just overshadowed by all the bending. Plus comic relief.