suigenyukiouji asked: What's the reasoning behind reprinting Crucible and Scapeshift at Mythic instead of Rare? From what I've seen of how rarity is determined over my 9+ years of playing the game, it's mostly impact on draft/sealed (which these both have next to 0) and slightly mechanical complexity (which these both are not complex).

There are other factors. For instance, we have to balance giving players access to old cards while respecting the feelings of the players who currently have the cards.