Link another card within a card

[kleinerpirat]

Card linking is currently not on the roadmap for Anki, but it’s a regularly requested feature:

Implementing card linking (I'm open to contributing)

It’s not a feature I think belongs in the core code at this time, but you should be able to accomplish it with an add-on - you can just hook into the review process and reschedule the other cards after the review is done.