Metal* It could be Molten Enderium tbf but eh.

For the Runic Block, I tried putting 8 purpur blocks around it. Notning. 8 Purple wool, nothing. How is this used?

Appears in the Nether*

A Chorus Fruit alternative*

Also, I don't think the Void Forge is needed since it only has one use now, so instead you could simply throw Endorium Ingots into lava or on top of magma, and it'd poop out the Molten Endorium.

Yes, thanks. In next "fix-update" on 1.12.2 it will be fixed. And about Void Forge... it`s still in mod just for a change.

Oh, You took a bit to respond lol.

And about boss summoning. Runic Block must be placed last of all. Sorry if you had to wait a long time for a reply.

Oh, you might wanna add that info to the lore.