To open the seal on both sides we need?
- Seal.
- Minimum, the sacrificial sealmaster needs to know how to infuse a rift opening seal, leave copies on our side. Die. Somehow bring over copies to the other side or make them there from scratch. With Leaf on board, Manjiro would be a good candidate. Assist him to get progress on the seal while healing from Severe?
- Different option. Bioseals are part of your body, more likely to naturally carry over to Pure Lands. Trade Orochimaru primordial seals to bioseal rift opening seals on humans of our choice?
- Location.
- Person on the other side needs to find the rift. Not easy. Unlikely to be able to make a seal that opens the rift from a random distance.
- Rift finding seal is one more seal added to minimum research pile.
- Easier if we have more rolls of the dice, kill more helpers to hopefully drop somewhere close. Hard if restricted to sealmasters. Makes bioseals look better.
- Timing.
- Seals need to be activated on both sides at same time. Need way to coordinate.
- Different option. Make the rift opener a paired seal with a custom trigger. Stays in standby when activated until it detects the activation of partner. Risks Akatsuki interrupt if we need to babysit our side of the rift for unpredictable lengths of time.
- Follow up.
- Rift opens. Now what?
- Need a strong idea of what to do + whatever preparations entailed.