The Shrine-blessing recipe with Oil of Intensity is listed in the documentation in a
very dangerous way.
I am quoting exactly as in the docs, highlighting the most dangerous word (source:
https://docs.median-xl.com/doc/items/cube):
"Combined with an Oil of Intensity, you can craft/bless an item with stat rolls in the higher range (see Shrine Bonuses page). A shrine with full charges is required and will be consumed.
Rare/Crafted Sacred item + Shrine + Oil of Intensity → rerolls item as crafted
or blesses the item with higher stats"
Without 2 Arcane Crystals, it will be
not be a blessing, but an "intensified shrine craft" instead. Which mean the item one spent quite some time crafting, ready to be blessed, will be...lost.
Luckily I am on SP with backup. I think all players, especially realm players will benefit from a clearer "intensified blessing" recipe.