This if a beautiful and must working trick. 99% it works(not 100%)
You can see i got 1 crystal and it worked. Its not fake no cheat.
You must follow the steps or you can not get it.
Other channels also posted a few on this but i can not sure about their process.
If it not works for you let me know at comment billow
If it works then give a Big Thumbs Up to this video
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Hope this vid helped u out! #marvel #howtogetunits #mcoc #marvelcontestofchampions #units #unitsforfree.