Hey there, Thank you for getting in touch. We understand you're experiencing difficulty getting a particular Praxic Blade catalyst to drop. We can imagine how this would have impacted your experience. Should this seeming issue persist, then please consider recording a video of you completing the required steps, only for the catalyst to not drop. If you record such a video, you can upload it to a media-hosting site such as Youtube, and share the link here. We'll then investigate this further.