Tried killing mobs, all sorts: pigs, cows, chickens, zombies, spiders, skeletons. No Ordo and no Ignis. Seems I will have to manage to kill a creeper before it blows up or even go to the Nether to be killed by Ghast all the times (this is my main problem here). I even tried, in a desperate attempt, to find a console command that would charge the wand, then I would try to craft the goggles of revealing and checking with that. No such command. Seems I would have to reverse engineer Thaumcraft's code, find how aura nodes are managed and patch/tweak my map to insert some nodes! This is just WAY TOO MUCH work!
Seems that EVERYTHING I am trying just fails with this mod, which is quite exasperating. I am starting to think this is something suspect in the map, because it migrated from FTB Unleashed to FTB Monster. This is always coming back at me and will eventually ruin my world. Lesson learned: I won't start exploring any other mod with extensive world gen, this is just a frustrating pain.