In terms of more concrete differences between Viscera Seer and Wurmcoil Engine, Viscera Seer, overall, likely has even more copies available than Wurmcoil Engine
I love the Lorehold take on WR as history-loving archeologists albeit the rather reckless, relic-grabbing, adventuring kind of archeologists who made the field famous in the 19th and early 20th century
Insolent Neonate is essentially a mini-Cathartic Reunion, as it also allows you to dredge immediately without needed to put a dredge card in the graveyard first
As for my own foil Korean Purphoros, I probably will not part with it even for a foil Korean Polluted Delta
cards in your cost area.): Look at 3 cards from the top of your deck
And - while collecting all cards in a single expansion is a lot easier in Japanese - it also means you'll probably end up spending more money on more separate sets, which some people will find off-putting