Core mechanics include the new Lander ability, which enables players to transform lands into powerful artifacts, and Terraform , allowing for the creation of tokens and other benefits from draconic destruction
Whenever another creature you control enters, Kefka Palazzo deals 2 damage to each opponent
getting in a hit with an annihilator Eldrazi is game-warping enough that losing the clone a turn or two later doesnt matter
In terms of special versions of cards, I dont think anythings going to top being able to get a grand for the foil Japanese alternate-art Liliana, Dreadhorde General as spotted on eBay, but I think Oko has a shot to be the new champion
Additionally, the condition of the card will play a part in how much a card will cost, with near mint and mint conditions costing more than a lightly played card, for example
Cards like Adeline, Resplendent Cathar and Rick, Steadfast Leader quickly make your board state threatening