While Collector Ouphe isn't the only card that does this, it does have the distinct upside of working with other green cards such as Chord of Calling , allowing you to grab it at just the right time to shut down whatever your opponents are trying to do with their artifacts
Yes there are edge cases where it's worse, or you have to pay slightly more since it's not a progressive discount, but forced sacrifice is wildly powerful in a format where creatures are frequently huge, indestructible, or both
The thing is, it doesnt do much apart from give itself indestructible counters
Plus, getting seven Soldier tokens when this creature dies is a great defense mechanism and a great way to rebuild post board wipe
That might be for cards that care about your opponents losing life, like Rakdos, Lord of Riots, or for lifegain payoffs like Drogskol Reaver