I assume it's because Toland himself was a warlock, or cause they radiate more light, just my guess
English
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Maybe. I thought it could be that there aren't many Warlocks in the Crucible (I tend to see more Titans). But it's probably not :-)
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Well the bounty was already made when the game came out though, I see your point though
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They could've got statistics and rubbish from the Alpha and Beta runs :-) but it's not very likely so never mind :-P