Belle - Inventive Engineer and Maurice - World-Famous Inventor were never really playable outside of casual decks, and Scrooge unfortunately seems to be more in their vain of card than of the Hiram Flaversham - Toymaker type of item based character
In particular, I think the game provides enough challenges to keep more experienced players engaged while still being accessible for new players that want to jump into it
Couple this with the ablity to move all damage and potentially send a character to the discard pile, and it's easy to see why it's so valuable
Any exerted character can be challenged (attacked) and banished from play (sent to the discard pile)
This allows GW versions of the deck in particular not be reliant on Captain Sisay in the command zone to tutor for everything, which makes games a little more varied
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