Hey, I just saw the new webapps, and while giving it a run, I noticed that the Core 2020 lifegain taplands and scry lands don't show up in the Dual Land guide app for "standard".
They don't show up in "Coming standard" either, which doesn't show any difference to "standard" actually. (I guess it is intended to drop the Dominaria/Core 19 checklands for upcoming september?)
Dual Lands guide
Eek, something didn't update right.
Manually pushed it again, and it looks like it straightened itself out.
Apologies for that, M20 should be update properly now.
To the beaten, the broken, or the damned; the lost, and the wayward: wherever I may be, you will have a home.