Update: got destroyed by a 9 year old at my FLGS in Akron and it fixed how I build decks
I showed up with 100 sleeved cards I'd spent 3 weeks tuning and he beat me with a 40 card pile he built at the table from a $12 box, and honestly watching him ignore every combo I'd planned around taught me more than a month of deck stats, so now I want to know if anyone else has a kid at their local shop who just reads the board better than the regulars do?