So yesterday in Coil Turn4, before last dreadnought, I pop a DEX potion (can't remember what kind, probably not Mega, like +20 or so DEX let's say), and all of a sudden, my Bloodletter resets every 0.5s like ... 5 times in a row. It was disturbing to say the least ! I'm guessing someone has already tried to see if there wasn't something about DEX and Crit. at very high values of DEX?
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