Glad to help
For those who have not yet gotten this anniversary charm ( golden year), please do hurry as it started Jan 13. 4 more months to go (I think).
You need to build a 3 tier layer cake. Once completed, it will drop 1 collection item a day, charge all anniversary collection, go to the Event on the right side to get your charm.
Event disappeared when I collected 10 charms. Give 85% chance to find items, experience and reduce time for Energy recharge. Can work to golden Phoenix charm
An easier way out could be to ask mm friends to gift some items, I know there are many good people out there
and start requesting for chargers