Talk:Game Updates/@comment-5312616-20131011023548/@comment-4951105-20131011114426

@ Xyphoideus: To answer your question, you can't. Even without using that purchase, the upgrade option disappears after you level up the artefacts once, replaced with merely 150 magic on its own as an option. That's what I unfortunately found when levelling my light habitat... :(

So my advice is, buy the upgrade before levelling up the dark/light artefacts