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Invisibility gives a precious advantage at Firetop Mountain, but it lasts only three turns and you need to quickly make the best use of it as it may give you a crucial advantage.
What are the best strategies or combos to use when you're invisible?
A famous player (aka Nom) has written an essay (whose title is "What you can't see CAN hurt you") about this topic. You can read his point on Invisibility here.
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