Marvel kickstarts Judgment Day event early in Eternals #9

gamesradar.com:

This summer's big Marvel event Judgment Day was announced to start making waves in March 9's Eternals #10, but it's actually starting early - in January 18's Eternals #9.

Eternals #9 by writer Kieron Gillen with artists Esad Ribić and Guiu Vilanova continues the long-running feud between Thanos and the main group of Eternals. In this issue, Thanos - after already haven taken the mantle of 'Prime Eternal' - is chasing the Eternals leadership all the way to Lemuria - the homeland of the Deviants, the Eternals' long-time rivals.

It's what happens next that turns this from more than just a Thanos vs. Eternals battle to the start of something bigger.

Spoilers ahead for Eternals #9.

Although Thanos has usurped the throne of the Eternals to become 'Prime Eternal,' the main group of Eternals we know as fans haven't fallen in line behind him as ruler. Instead they've rebelled, and after Eternals #8 they've spirited themselves away to the Deviants oceanic kingdom after an uneasy alliance was formed.

But while Thanos doesn't control these Eternals, he does control another group of Eternals - the Oceanic Watch - and uses them to begin a massive attack on Lemuria. What results is destruction which kills or maims a majority of the Lemurian population, and Thanos is doing it all to kill one person - Phastos. Because he needs him.

You see, in Marvel Comics' Eternals lore, when an Eternal dies they are reborn inside a machine to live again. Thanos, as Prime Eternal, has dominion over the machine, and is able to pry information around those dead Eternals as they re-incarnate anew.

So what knowledge does Phastos have? Phastos was able to revive Thanos (that's what started this new Eternals comic book series) despite Thanos being unique