MTG: Arena doesn't allow three player games, so what the bot is doing is joining _in_ the opponent's seat. Presumably this is why it can concede on their behalf

MTG: Arena doesn't allow three player games, so what the bot is doing is joining _in_ the opponent's seat. Presumably this is why it can concede on their behalf. I guess the game doesn't check for this because its developers didn't see why anyone would even care to try.