Despite the solution title, I don't think 90 is actually possible. 2 arms on anime can't transfer unbonded atoms, so you would need to give both arms access to a bonder (to get the vitae/mors bonded to something) and a debonder (to get a salt for anime). Due to the anime glyph in the middle you can't share those. But an extra bonder and debonder is the same price as an arm.