How many crystals are needed to max out gacha-exclusive riders and attachments?

Let's use this current festival gacha as an example. Pickup drop rate is 1% Rider is 200 points per unit Need 17 units including the base form for max limit break Attachment is 50 points per item Need 5 items for max limit break of attachments 11 consecutive pulls for 1500 crystals 1 point per gacha pull Assuming you don't pull any of the featured riders from the gacha, the points needed would be 200 * 17 = 3400 points. Adding the attachment points brings it to 3650 points. To estimate how many crystals 3650 pulls would be, if 11 pulls cost 1500 crystals, one pull is about 136.36 crystals. So, 3650 * 136.36 = 497727.27... This means around 500,000 crystals should be enough, even with the worst luck. However, I don't think it's possible to not pull a single featured unit unless the developers are manipulating the rates, so I asked ChatGPT for an approximate estimate. (Unit: 10,000s) 10: Pretty tough 12: Still a bit anxious 14: You can take a chance 17: Quite realistic 20~: Safe With 200,000 crystals, you can do about 1466 pulls, and the expected value is 14.7, so it's safe. Hope this helps with your gacha planning.