Less than 1% of Collector Boosters contain a serialized Praetor
To understand these new cards and what makes Wilds of Eldraine so different from Throne of Eldraine, we need to delve into the past of the set and understand what made Throne of Eldraine so broken when compared to other Standard legal sets in Magic: The Gathering
Of course, the biggest upside of Zirda, the Dawnwaker is that its cost reduction applies to all permanents (see: the Basalt Monolith / Grim Monolith combos for Commander), and some artifact-based decks come very close to accidentally meeting Zirda, the Dawnwaker's companion restriction (for example, Modern Urza decks often only have Uro, Titan of Nature's Wrath as a permanent without an activated ability), so the unique wording on Zirda might open up new possibilities, compared to Biomancer's Familiar and Training Grounds, that will take time to explore
It's like she knows she can do good art, but enjoys fucking with people by giving us complete crap to look at instead