I was doing research tonight, and as far as I can tell the ritual of gaia's transformation is bugged.

This was tested in the AlienMC pack (Private Code PurpleAlienPenguins, using blood magic 1.3.3-4), then again in a fresh forge 1448 environment (with blood magic 1.3.3-13 ONLY), using the best information I could find on the internet. The ritual was set up in the exact configuration shown in the forum post, using a number of configurations of plinth items - including the one showcased here for a mushroom island biome.

Here is a video of me performing a ritual (with sadly far off plinth items, this was before i was calculating biomes based on .5 .5 instead of 0 0, but it was the one I recorded):
https://dl.dropboxusercontent.com/u/5765978/ShareX/2015/08/2015-08-13_07-12-53.mp4

I also tested this in a forest biome, and it did not change to plains as should be the effect if I screwed up the plinth items.

Looking to see if others can replicate and/or if I am an idiot.

Thanks for your time.

Apparently I'm just an idiot. A player got it to work on the server. Closing.