Oil counters also play very nicely with this next mechanic Proliferate Proliferate is a returning mechanic that plays nicely with both Oil and Poison counters
As mentioned above, you just have to be a bit more wary and research the item you are buying to make sure you are getting a legitimate product, and make sure the seller is reputable before buying from them as well
A Food token is a colorless artifact token with "2, T, Sacrifice this artifact: You gain 3 life." Eating, er
When this happens, I turn to TCGplayer
Best of all, you can pull out all the stops and optimize many counter doublers in the +1/+1 counter strategies
It's a philosophy I didn't expect to hear, but I certainly have an appreciation for it because it's what has made the game so fun even after all these years