There is no standard rotation in the Expanded format , although there could be one in the future
The cards are translated for Thai audiences, but they retain the same gameplay rules, making them compatible with international decks
Now, considering it's only possible to trigger this ability once during each of your turns, it's easy to see why it hasn't translated all that well in a multiplayer setting
It's such a powerful effect in Standard ramp decks to have a creature both become stronger based on the number of lands in play and also ramp that number up when it enters, and that's not the only use case for Lumra
Play this dragon, then play more and more dragons until you win
Cards like Spectral Procession and Clarion Spirit pump out flying spirit tokens, and that helps with cards that require spirits in numbers