'There's no telling which enchantments I saw in Elphyn's mind belong to the old tower and which are instead born from her fusion with the artifact. I might as well study Baba Yaga's tower like my predecessor did Menadion's.'
The previous Yggdrasil had sent their Chroniclers to follow Menadion everywhere, using the elves' breathing technique to study the tower core with the help of the World Tree.
Unlike Lith and Baba Yaga, Menadion didn't hide her presence so with time, patience, and cloaking devices, the Chroniclers had first cracked the cloaking runes of the tower and then copied its core one bit at a time.
'Yet not only do I have no idea how long studying her hut would take due to Baba Yaga's elusiveness, but there's also no comparison between the two mage towers. The ease with which Verhen defeated Argantyr alone proves it beyond doubt.