Which 6* champion I should rank up to R2?? Please help.

I'm currently having 6 t5 basic catalyst and acn rank up two champions..
I left with 6.2 the champion, ofcourse 6.3 and 6.4 and Abyss of legends

I left with 6.2 the champion, ofcourse 6.3 and 6.4 and Abyss of legends

Which 6* champion I should rank up to R2?? Please help. 48 votes
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Is this another brag post?