i never play ranked unless its snow day so my tourney rank is weird and just is whatever after long time ago from decay. but current tourney rank is platinum
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just wanna play in some diamond extra mode (no one de-ranks in extra mode tourneys + heatseeker/pentathlon count) to earn tournament creds towards the BMGE
You can get BMs out of any of the cups for tournaments. The one you're wanting to unlock doesn't really add much of a chance to get it and costs way more to "buy".