Description:

I've been searching everywhere, even with the Nature's Compass mod. It hasn't been moved, or it's a bug that doesn't generate the biome to obtain the antimatter liquid. I can't advance the recipes needed for the new crafting. I hope there's a fix.

Aside from that, I like this new mechanic and the changed dimensions, which have been more atmospheric.
I'm satisfied.

(used translator)

Affected versions ("latest" is NOT a version):

• Minecraft:1.12.2
• Forge:14.24.5.2860
• AbyssalCraft:1.12.2-2.0.0-beta-2

Hello!
Yes, I changed biome generation in 2.0.0 so that none of the biomes generate in the Overworld, and there's a ritual that transforms Swamps into Coralium Infested Swamps, which I apparently locked behind the Omothol Necronomicon...
No progression is locked behind Antimatter though? The Oblivion Deathbomb, along with Sacthoth is optional, and by the time you reach Omothol, you can find Liquid Antimatter in the blacksmith building (where you would find lava in the village blacksmith building).
Although, it looks like I made the Coralium Plague Antidote require Anti-Plagued Flesh, which doesn't work anymore (since the biome isn't naturally accessible).

Hello again. Thanks for responding.
As I was already used to the previous version, the new mechanic is still much better.

I'm reporting: the Guardian's Staff doesn't work in portal mode. It doesn't create portals with the new mechanic, or is that a mistake on my part?

No, you're absolutely right. It broke when I changed how the keys work, then I just haven't come up with what to do with it.