The promo cards you can potentially get are Delphox, Ampharos, Crobat, and Goodra
Since it can only target nonartifact creatures, you might be able to pair it with Biotransference if youre playing a deck that cares about making things into artifacts
Even if it eats a removal spell, you probably draw a card off Esper Sentinel
It allows you to look at the top 3 cards of your deck
Erika's Oddish #1Common $0.16 Erika's Oddish #70Common $2.37 Erika's Oddish (47) #47Uncommon $3.34 Erika's Oddish (78) #78Common $0.77 Erika's Oddish (Energy Symbol Pattern) #1Common $0.25 Erika's Oddish (Poke Ball) #1Common $0.21 Oddish #97Common $16.47 Oddish #58Common $0.40 Oddish #63Common $0.72 Oddish #68Common $0.80 Yanmega #9Rare $0.20 Mewtwo #59Holo Rare $3.24 Seel #29Common $0.05 Tangela #4Common $0.06 Heliolisk #50Rare $0.07 Zeraora V #53Ultra Rare $0.84 Simisear V #22Ultra Rare $0.83 Shinx (40) #40Common $0.15 Radiant Charjabug #51Radiant Rare $0.65 Sunkern #7Common $0.08
A Retail box of Metal Raiders contained Thousand Dragon, which is nice, but nothing compared to the Hobby box's Gate Guardian