When this quandary gets asked, its usually at the expense of someone like Brad Nelson or Owen Turtenwald
For example, if you control The Ozolith ("Whenever a creature you control leaves the battlefield, if it had counters on it, put those counters on The Ozolith.") when Sin's last ability resolves, you'll put the appropriate number of each kind of counter onto both The Ozolith and the target creature
While theyre fairly powerful, its their effect on perceived barrier-to-entry that really posed a problem because casual players watching Commander games in passing could reasonably assume that they needed hundreds (now thousands) of dollars in Power-9 mana as table stakes, just to join the format
After using this deck a bunch, you'll pick up more advanced skills like setting up loops, managing resources, and anticipating your opponent's moves