>>49787071It'll be stat-based color auras. Each point on the star represents a different stat, and you'll be able to pick which stat to get a big-ass boost in once per battle, alongside a colorful glow effect for your Pokemon depending on which stat you chose.
Could possibly work like Speed Boost, where your mon has its chosen stat boosted by 1 each turn after activating the gimmick. HP could work like a buffed Leftovers.