alt Hacker Newsat the risk of being the shill but i think its helpful and what you are looking for, https://untap.in/ does this, solo play both mirror play your deck AND deck vs deck where you play 2 decks as one player, alternating turns.
at the risk of being the shill but i think its helpful and what you are looking for, https://untap.in/ does this, solo play both mirror play your deck AND deck vs deck where you play 2 decks as one player, alternating turns.
I was thinking something 2- or 4-player, but that's cool.