Lets start with the aspect of Commander precons that everyone tends to have an opinion about
It would take a pretty serious cascade of mistakes to actually warrant Standard bans, as the format corrects itself in a year and a half anyway (which is even down from the previous two years)
It also gets you one step closer to the level 3 anthem which is fantastic for token-based decks
Shinx is often encountered in grassy areas early in the game, making it a popular choice for trainers looking to build a well-rounded team
Tymna the Weaver + Thrasios, Triton Hero / Kraum, Ludevic's Opus Tymna the Weaver paired with either Thrasios, Triton Hero or Kraum, Ludevic's Opus are the archetypal S tier commanders
Use official card databases for card identity, inspect photos and condition wording, verify seller reputation, avoid unrealistic prices, and use graded-card routes for high-value cards when raw condition risk is too high