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A type of build found on the online MMORPG Guild Wars. An assassin using Glyph Swiftness, Deadly Paradox and Shadowform can maintain Shadowform indefinitely, giving the user immunity from most types of damage. Often used for farming.
Note: there were permasins before GW:ENexisted, but with its addition the build becomes much simpler.
Me: Um...hi.
Group: OMG FINALLY A PERMASIN TO RUN US TO DROKS! Do you have shadowform?
Me: What's that?
by MankMoon August 31, 2008
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