is the vanilla mythic black bordered?
No, it's in Unstable.
seen from China

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is the vanilla mythic black bordered?
No, it's in Unstable.
my Lgs all refer to R&D as "Marky Mark and the funky bunch" do you have a nickname for you and your coworkers?
No. Can I use that one? : )
the hours as the story spotlight cards are seriously awesome, please high five everyone involved in that decision for me : )
Will do.
50/50 honestly seems very high on returns to me, doesn't it seem like it would get stale to have half the blocks be things we've already seen just redressed?
If you follow this blog, you'll notice I get a lot more asks to revisit an old thing than doing a new one. Both are important so we try to keep an even balance of both.
Why does domri being younger than the main cast cause a problem? I'm 19 and one of my better friends is 14, and domri doesn't even have to be friendly with the main cast
Domri's age isn't an issue.
does green get "destroy target planeswalker" or does it not get it specifically, just with destroying a non-creature permanent?
It doesn't get it specifically but it does get "destroy target noncreature permanent".
why is white tertiary in reach when black has less fliers and there's one white card with reach (hundred handed one) since 7th edition and it's mostly for flavor?
White has gotten it more for flavor than anything else.
Remember tertiary can be very infrequent.
does crypt champion have doublestrike because you sacrifice it unless you spent red on it, making it essentially a black spell or a black red creature with double strike?
Black can have double strike if it requires access white or red. Any card can have off color abilities if it requires having a color that naturally has that ability.