How can I get more keys?

Looks like 2 in the event rewards if you open enough crystals. Where else?

Comments

The third one is in realm milestone which I think community will achieve in upcoming 6hours

Beside that we will see more keys for money during Christmas sales in webstore

Otherwise opening jubilant crystals, where their drop rate is 3%, and jubilant itself is 7.77% from superior banquet crystals