Collectible Card Game Headquarters

Hey guys hope you can help me out here.

I have been playing a Quest with Commander mode activated for quite some time now but havent seen Command Tower and Commander's Sphere in the shop.
I can see them if i choose full catalog but they still havent "dropped" at any point.

Am i doing something wrong?
Do i have to unlock them somehow?

Hope you guys can help.

If you're playing on desktop I know the struggle. For some reason the commander set cards don't show up in the shops. I've tried making a world with only commander sets in it but upon opening the spell shop for that world it crashes with out of bounds index, index 0, size 0. This is in contrast to the commander cards generating in the starting pool you get. The default "Random Commander" world *should* be pulling from the entire card collection across all sets I'm pretty sure but commander cards seem exempt.