1 per pack unless theres an Enchanted
Under Bandai, the first attempt to bring the game to life was unusual to say the least, changing its rules and fundamentals into a new product of the publisher's own design
The most notable change (other than the banned and restricted list) was the official ruling that Constructed decks had to be 60 cards at minimum
As its a Legendary Praetor, it will remain at a high price given its unique effect and the history of Praetors in Commander
As such, decks built around Zada, Hedron Grinder usually involve a mix of cheap creatures, red token generators, and spells worth copying
It might not be particularly exciting, but it gives you an option that can be way more useful at some tables just by being faster