Man, it's really hard to follow up Renne with another speculation post, but the good news is that today's Arcana, the Tower, has the most potential to be a fascinating Enforcer of any card outside maybe the World. Consider today a nice breath of fresh air to enjoy before we hurl ourselves into the "New Generation" of Ouroboros.
If you know anything about Tarot readings then you'll probably be aware of the Tower, because it's meaning is the one everyone thinks Death or the Devil is. The Tower represents chaos, massive upheaval, and change on an unprecedented scale. It's not necessarily always a bad change, but it's a widespread and irreversible change and that's scary in and of itself. While not always the case, the card has been linked to things like natural disasters, destruction, and trauma. It isn't always bad, but when it is, it's really bad.
The good news is that the reversed Tower is puppies and rainbows and... Yeah, I'm lying. When reversed, the Tower at best means a near miss and at worst just represents delaying the inevitable. The chaos will come, that can't be changed, the only thing you can do is avoid it or delay it until it finally catches up to you. Now, I know this all sounds depressing, and that's because it is, but the important thing to remember is that nothing lasts forever, and this is true for the danger presented by the Tower too.
So, who could the Tower be? Well, literally anyone. That's ultimately the thing about the Tower, it's a rogue lightning bolt, it can come from anywhere. But this does give us a bit of a hint. I imagine the Tower is likely a stealth operative, similar to Joshua and Sharon, but one that deals in more carnage than precision strikes. Something akin to a saboteur, able to strike with maximum damage while never being located, a kind of expert bomber.
I like this idea because it can easily be weaved into prior stories if they feel like it, and you know Falcom loves a good retcon. Jester was the patsy for Ouroboros' bombings of the Guild in Erebonia, but that doesn't mean they did it themselves, it may well have been the Tower unleashing this destruction. Did George create the bomb that was planted on the Courageous? We haven't seen him make explosives before or since, so it's possible he got the bomb from someone else entirely. With all the discussion of nuclear bombs in Calvard, it'd be interesting to have an explosives expert's opinion on what they consider right or wrong about the weapons.
This is, I admit, a very literal way to interpret the Tower. It could be a politician who intentionally causes problems in government, it could be an assassin who eliminates the most sensitive targets, it could even be an aggressive military leader, desperate to let slip the dogs of war once more. There are so many ways to cause destruction and chaos in Zemuria, that it's hard to say which one would be the biggest threat.
Give me your suggestions, your theories, your hopes, let's enjoy them together while we wait out the storm, because tomorrow always comes, and a new Star always rises.
Anyway, it's definitely Nate's Girlfriend until I'm proven wrong.