While we dont yet have a look at the Commanders leading the decks, some more information was revealed about the decks themselves
That means any time any players creature dies, this cat is getting a significant buff
The Behemoth buffs your whole board and makes it lethal out of nowhere, and Kozilek draws you a ton of cards and annihilates opposing permanents
Pack Interaction: You need to answer a turn 1 Ragavan, hes banned as a Commander, but legal in the 99, or a Turn 2 Dark Ritual play
With pretty insane draw capabilities, a ton of tricky ways to work around your opponent by bouncing cards to the hand, granting them reckless, or sending multiple foes to the Inkwell via Spooky Sight, Emerald/Sapphire is a welcome alternative to the more meta-hardened Steel decks that will likely dominate the meta this time around
If Caldera Pyremaw leaves the battlefield in response to its ability, use its power the last time it existed on the battlefield to determine how much damage it deals as its ability resolves