These cards - Dockside Extortionist, Mana Crypt, and Jeweled Lotus - tanked in value when they were banned by the rules committee, which sparked intense backlash against the small group of volunteers that ran EDH
At worst you pump -1/-1s on your opponent's side and +1/+1s on yours, and at best you increase opposing time counters, your shield and loyalty counters or poison
This card will shine most prominently in non-singleton formats like Explorer, allowing the player to run multiple copies of Fog in their deck, recurring the effect as many times as they can cast copies of the card
Team Spirit isn't particularly fun, just a bunch of animals gathered together, but the flavour text lampshades how there isn't a chicken in this chicken-themed set, and you have chicken footprints on the background of the card text
MTG Modern: Probing Mishras Baubles Longevity Magic the Gaterhing's Modern format was and is often dominated by enablers and not, as one might think, payoff cards
That's the gap Snapshot fills