Is there a site out there that shows when various Planeswalkers will be available for sale? For instance, when will Sarkhan come down, and Liliana2 go up?
No. They don’t want you to be able to plan, because then you won’t need to buy crystals when the pw for whom you’ve been waiting months spontaneously appears.
Liliana 2.0 (and Kiora) will go up this Thursday (the 12th) at 8am UTC (3am EST). There’s no way to know which planeswalkers will enter the vault outside of the in-game “upcoming” planeswalkers list. They’ll always arrive the coming Thursday.
Sarkhan will come down on Thursday (the 19th) at the same time. You can always view which planeswalker will exits when, here: https://d3publisherofamerica.zendesk.co … the-Vault-