Which 4* mystic to R5?

I already have Voodoo R5 sig99. All choices are awakened.

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Scarlet is tb

save for 5*)
otherwise sw, no 5* version and she is really good with high sig / vs champs who rely on buffs like Hype or medussa

Scarlet Witch is the best 4 star Mystic champ and it is not even closed.