What's the word on the Light Trial having no Master? Will there be a Final Battle between the top two Challengers, or will the top Challenger be Master without a Final Battle?
This also has ramifications for the betting. I was looking at the bet table and noticed the Light column has "yes" and "no" listings - which, if there is no Final Battle, will be irrelevant.
Light and Gravity will have its top 2 challengers go to the Final Battle. If Wizel doesn't come back soon, then I suppose that it will be the same for Life.
There's still relevancy in the Yes/No for Light and Gravity -- by saying "No," you're betting on the second-place challenger to win with fewer upgrades in the Final Battle
On-topic: The Arena task is a poorly-received task, and rightly so. It's already hard to build a deck that can stand up to all the Immorushes and Firestalls in the Arena, let alone create one that is not a variation of a "tried and true" deck. With that in mind, this task is largely up to the RNG to give you low HP decks and weak opponents in a row so that you can fill those rings in.
A variation of the task that would be more reasonable to the participants and more beneficial to the community is to create a completely unupped deck with at least 50% on-element cards that earns a bonus spin in Bronze. Newbies are always looking for ways to get rares, and the Bronze Arena is their most reliable way of getting them. Giving them information on how to build a reliable and accessible deck for grinding Bronze will be of much more use than creating a deck that can get bonus spins in Gold/Platinum if the RNG is nice.