In the lore of Destiny it appears that warlocks are the main class that have blink and also says that some hunter ( bladedancers) have learned blink from warlocks.
So why does only the voidwalker have blink? Stormcaller needs blink too I think
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Seems like blink would fit storm caller at least as much as void walker. Maybe a slightly different effect like you're briefly an electric bolt and zap to where the blink lands