Planar fragment for the armors are easy to obtain. Just require a lot of time and repeatedly doing it. At least I know I have a finish line and a goal to reach. Which is 300 fragment. I know when I will finish and my progress is slowly moving as every minute I spend in planar tombs and gain 1 fragment. But for arena case lol I'm not sure if the recipe exist it's like fighting a pointless and endless battle here. PLANAR TOMBS for Fragment is Challenging, yes I love it. PLANAR ARENA for Recipe is nearly impossible. There's a huge different between CHALLENGED AND IMPOSSIBLE. Also sts have a history of making mistake on certain odds and drop rate. Who knows if there an actual bug that stop recipe from dropping haha.