This is a great idea in concept. You could get a guaranteed 16 envelopes in all previous years, so take half of those and make you have to play for them to get the other half at a discount. Nothing wrong with that at all. Until you understand that it's just not possible to get that other half. The tokens are supposed to drop from the end chest in Celestial Challenge, but they don't. I've played the challenge a good many times before reset and after. The ONLY tokens I got were from the daily chest! Not a single token from the end chest.
This MUST be a bug. Cause there's no way anet would take away a guaranteed way to get the envelopes only to turn them into super rare drops. Right?! (He says sarcastically, but hopeful and optimistically).
If this is not a bug and is intended, then this is not ok. It really kills the festival. This festival has always revolved around these rewards and that chance to get some extra gold. As I said, I love the idea behind the change, but getting the Divine Lucky Envelopes should still be guaranteed! Finish the challenge, get a token - done! There should be no rng involved at all. You're catering to those who can spend all day farming that challenge and encouraging people to simply afk the challenge, hoping they get those tokens.
Again, I did this challenge numerous times and got 0 tokens, so I'm hoping this is just a bug.