I am quickly writing this before the MSM Live tomorrow, although I doubt that they're going to reveal anything substantial, I cannot risk them confirming my theories before I actually release them to the fandom
This is a small precursor to my actually big Ethereal theory I've been cooking up the past week. It encapsulates the lore of both games and I cannot wait to show it to yall, but I am getting ahead of myself
So, the teasers we have are the Krystillium hand reaching out at the end of the Titansouls trailer in September, and the Krystillium hand grabbing Whaill at the end of the Paironormals trailer in December.
Most of the fandom believes these are teasing the Ethereal Union island, and I think that IS the most plausible outcome, but something still bugs me. It's just too early! The Ethereal class finished only a couple months ago, and to cap them off so soon feels a little bit wrong. We have already gotten 2 teasers, so whatever they're teasing is coming only in a couple months!
But, what else could they be? Well, I've seen some discussion that it could be Plasma island. People have been wishing for this as much as the Ethereal Union island. The first teaser comes from Mirror Plant island, which represents Plasma, and has Ghazt, the single elemental embodiment of Plasma, so the Krystillium hand could be reaching for a Ghazt! In the second one, it grabs a Whaill, the Plasma quad! It's highly speculative and could very well be a coincidence, but I have more to say!
I know there is a good reason why they shouldn't happen, we already have the 2 Ethereal islands, 5 more that are basically the same thing would just be repetetive and excessive! But bear with me: what else is really repetetive and excessive? The Mirror islands, but the reason why they exist is for coin farming and zapping eggs. However, Ethereal eggs cannot be zapped anywhere, and there are PLENTY Shard sources around the Monster World now, so there is no reason for Mirror Ethereal island, and even less for Mirror Ethereal Workshop. So, the 5 Ethereal element islands could potentially fit in their place, as they at least get completely new songs! And do you actually want Mirror Ethereal islands??
One last thing, to tie this all together. We know that the Krystillium hands belong to Zarroë. There is nothing else they could be and I will stand by that. But, why would Zarroë be snatching it's own creations like Whaill like that? The very image of the hand grabbing seems a little rough, slightly violent, you know what I mean? My theory: that isn't Zarroë.
It's the MIRROR TIMELINE'S ZARROË, stealing Monsters from both timelines. This is all I will write today, and I will get the big Ethereal theory out as soon as I can, but until then, see you in the Live!