LF Blind macro!

I use to have a blind macro where I would set a focus and it would blind my focus without me losing my current target. Is this still possible? Also, if my focus is dead blind would work normally. Also work normally if no focus is set.

Thanks.

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#showtooltip
/use [@focus,harm,nodead][]Blind

Will this blond my focus target without having to actually target him once my focus is set?

Literally the entire purpose of the [@focus,harm,nodead] bit.

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