Hey, it's all good in the hood, y'know? We could just have different formats, and agree on which format to use before a duel takes place:
1. "Virtual Reality" format: Use only cards that you really own, and no more than your really own. No more than four of any one card, except basic lands. Vintage banned and restricted list still applies. (The closest we'll likely come to playing each other in real life.)
2. "Budgetless Vintage" format: Use any cards you like. No more than four of any one card, except basic lands. Vintage banned and restricted list still applies. (A chance to play with all of those $500 degenerate cards.)
3. "Sealed deck" format: We could play some sort of limited league, if you guys are into that sort of thing (I think it's fun, personally. You really learn to appreciate cards that you would otherwise overlook as "less than optimal.")