Every card from the main set is now fully revealed Legendary and Enchanted cards too
You're much more likely to open multiple rares in Set Boosters than in Draft Boosters
Debut set The First Chapter has no cards that interrupt your opponent during their turn or shut down their actions, leading to a simpler division of each players actions that makes it less complex than other TCGs timing-based strategy
That being said, you can make it a little less omnipotent
For context on just how under the radar Brainstorm was, heres the eventual champion and shortlist Hall of Fame candidate, Justin Garys U/R list from that same event: Creatures (12) Lands (22) Spells (26) 2 Nevinyrral's Disk 4 Counterspell 4 Dissipate 4 Force of Will 3 Earthquake 3 Disintegrate 2 Incinerate 2 Serrated Arrows 2 Binding Grasp Sideboard Super rad deck, to be sure, but definitely could have benefited from a playset of Brainstorms
Rise of the Floodborn - Amethyst and Steel Best cards: Madam Mim, Snake