If one thinks of the most iconic cards in EDH decks since the format became popular, Doubling Season tends to spring to mind. The notorious Ravnica enchantment and pet design of Mark Rosewater's fueled esoteric combos and explosive token swarms until the planeswalker type was introduced and it was discovered that the Season allowed planeswalkers to hit their ultimate abilities extremely fast. It was deemed too dangerous to reprint despite its popularity, and instead variants like Parallel Lives sprang up in its stead, until Modern Masters reprinted it and other format staples this year.
Well, 2013 seems to be a good year for token and counter doubling, judging by Bruce Richard's Commander 2013 Serious Fun preview article, which shows off a rather multiplayer-friendly variation on the original. Take in some Primal Vigor:
Primal Vigor 4G
If one or more tokens would be put onto the battlefield, twice that many of those tokens are put onto the battlefield instead.
If one or more +1/+1 counters are placed on a creature, twice that many +1/+1 counters are placed on that creature instead.
Now, this might be narrower than Doubling Season, and benefit your opponents and not just you, but it's hardly strictly worse than the original. First off, it doesn't turn -1/-1-counter effects on your creatures into a blowout - there's less potential for backfiring in that sense. Secondly, there are times you may want your opponents to have extra tokens and counters; yes, in the sense of getting them in range of Retribution of the Meek and similar, and for enabling crazy combos like a Hunted creature plus Massacre Wurm like Richard mentioned, but also, more prosaically, because EDH is about alliances and friendships. Sometimes the pure satisfaction of helping out a friend in need who's also piloting a creature token or +1/+1-counter heavy deck is all you need.
What do you think of this "fixed" Season? Let me know in the comments.