You may remember this question from Red vs Blue.
I'll name a couple for examples:
The ability to fly, but you can only fly true North.
Super strength, but you can only when standing completely still.
[spoiler]This is inspired by Peaches Pan Tao.[/spoiler]
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Probably Russia. They tanked their economy in the 1990s and never really recovered. At least China was able to figure out a way to be profitable by transitioning away from communism.