Sadly, I think the rate is poor enough that it's unlikely to show up anywhere, but more sacrifice outlets like this would be quite welcome
The games simplicity makes it easy to pick up, but the strategic depth ensures that mastering it will take time and skill
There is a LOT of ground to cover so I'm not going to waste any more time
Packs from any product have exactly the same chance at pulling rare cards
Color dictated some slots (Vraska, for example, was the only black-green planeswalker in the set and thus had to be hybrid) as did slot placement (ten cards had to be monocolor uncommons), but mostly it was based on what rarity the best design for each planeswalker felt most suited
Sorceress's Schemes is a red uncommon that pulls other instants or sorcery cards out of the graveyard or even exile, and - with the right helpers - creates an infinite loop that will ping your opponent to death