For example, at its most basic, the network might recognize that creature type cards have an associated power and toughness number in the lower right hand corner of the card, or that some cards have reminder text to explain abilities
With two types of evasion on it, both flying and menace, Dimir Spybug is hard to block for just about any deck
you are right that his minus loses a little due ti all the ETB effects in cube but brainstorm still often just says draw 3 w a shuffle effect and any game where he survives 2+ turns is basically GG
All in all, being quick to impact the game is a valuable quality of a card, while being slow to impact the game is a very real drawback
You need to do everything in one turn for Glimpse of Nature to be worth it, but in a deck with a bunch of small creatures, this can draw a ton of cards
Duke Ulder Ravengard Not a lot of soldiers in this deck, but Duke Ulder Ravengard is sneaky good and can pop off