Prison of elders. Always delivers strange coins. Do 4-5 runs on that and you should be well on your way to 15- 20 coins
English
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Ahah! From what I understand, we need keys to get in?
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No. You can play Poe anytime. You only need a key for the final chest. There's 2 other smaller chests that'll potentially give you coins. Play it with others and follow there lead