For Grand Prix, you get Progenitus (uhhhh)
If you had them stuck in your hand, you could Body Snatcher one down, but otherwise, would have to either play them or make yourself discard them (which involved a lot more work)
Ive seen this deck pop off and level entire boards by bringing Massacre Wurm back to slay a bunch of tokens, and there are some low-cost creatures to get the ball rolling pretty quickly
On top of that, Aurora, Dreaming Guardians three strength and five willpower pair with its two lore to make it a solid card by itself, able to likely withstand a few attacks in the early game - especially given that having Shift 3, allowing you to bring it out on top of another Aurora card for a lower ink cost, means you can have it on the field very early on
I can accept that overall Rise was a format that was very much loved by those deep into the scene of Magic, while lacking casual appeal based on comments made by Mark Rosewater in the past
All in all, one of the upper-tier sleeves but not without its share of problems