To summarize what we know from what has been confirmed: It looks like it was Ursula who burst out of the locked Lorebook Martin opened This caused the flood, which flushed out the Lore items into the realm of Lorcana The flood of ink has changed the world, creating or changing the Inklands Purple seaweed, pools of black ink, and shadowy tendrils are shown across cards and art Ursula has a secret contract, was looking for lore, and is now finally enacting a plan There is a shadow storm and a mysterious structure at the edge of Lorcana Now, more has been revealed through a trailer, card art, and a new box set
And while her ability is certainly pretty cool, I doubt it will be strong enough to tempt players to include it in their decks
Sure, it's only once a turn, but it's also capable of triggering on your opponents turns, making it wildly good in Commander, where you have three other people playing
Each Non-foil drop is selling for $29.99, while the Foil variants cost $39.99
Nascent Metamorph becomes a copy of that creature until end of turn
it makes Eloise both the sacrifice payoff and a source of sacrifice fodder