like Shrang I have seen Cosimic Power Jirachi used well on rare occasions, but it requires a ton of support and its fair share of luck (since a CH fucks you and they have all the time in the world to CH). Regardless, the actual set posted has a large number of flaws, and your single log is of a pretty bad opponent. If someone wants to actually make a better job at presenting the set, you can give it a go, but this version doesn't get a pass from me sorry
QC REJECTED 1/3
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