So you can turn any discarded and now exiled artifact into a free beater copy, like The One Ring for card flow or something similar like Darksteel Forge to make them indestructible
Thus, milling it with Overlord of the Balemurk or discarding it via Faithless Looting already grants two card types in the graveyard
Once an item glimmer is played it remains in your playing field even after it has been exerted, with the only way for your opponent to banish it being through using abilities or other action cards
The lower in power level a Cube gets, the more that 3/3 body matters, and just keeping the menace token is also of some value in these contexts
This is definitely the one bug many of us would love to see squashed
WotC was very concerned that pushing this mechanic too hard could lead to repetitive and unfun play patterns, so the majority of venture cards were scaled back in power pretty hard