Pyroxene: Primarily for recruitment on limited banners. Only use for AP refills if you're a whale or need to push progression/event farming. Eligma: Use sparingly. It's best saved for acquiring shards of limited-time students you missed or for quickly star-upgrading a crucial meta student. Avoid using it on readily available 1-star or 2-star students unless absolutely necessary for a specific challenge. Patience is key with these premium resources.
