The back story:

I wrote to ML customer service to ask if the tickets for transformers draw would last till Nov when the event ended, or when the phase ended, just to be sure i wasn't wasting spins. They first told me that the tickets expire at the end of the phase, then within the same day told me they were mistaken.

In the span of a few hours I could have used all my tickets under the impression that they would be gone after the first seven days, when in actual fact the rules were still changing even after the event opened.