The one challenge was a rule we'd implemented where every legendary creature in Foundations had to be a pre-existing character
With the advent of Saga creatures, it's much easier to get into a situation where a Saga on the battlefield loses all of its abilities but is still a Saga enchantment
If any cards have the keywords Activate: Main or Once per Turn, you can activate the abilities during your Main Phase
You can figure out if your card is Enchanted not only from the rainbow hexagon symbol, but also from the artwork as Enchanted cards offer a full art piece, taking away the border and using colours in keeping with the artwork
a powered up Shredder, with even bigger, more numerous sharp edges, just looks that much more of an immediate, deadly threat
We'll see about any further bracket updates, and perhaps where we landed on some of the above questions, then