The Four-Color Reclamation deck he's playing is teched out for the pseudo-mirror against Temur Reclamation, and Prinz will hope that the Ben Weitz Ben Weitz has long been recognized as one of the best minds in the game, but even after nine Grand Prix Top 8s, it had never translated to a Top Finish before
Shalai, Voice of Plenty Shalai, Voice of Plenty has a really appealing passive ability (and the rest of the card isnt bad, either)
Short Answer It's a necessity to meet other needs that R&D believes are more important to the game than the value proposition of any one booster pack
The best way to describe this issue is single card vulnerabilities
Talrand, Sky Summoner is a control deck, and he could literally be the only win condition in your entire deck if you so choose, which means you can run a TON of disruption
1 Smoke Shroud