I have been trying to test decks using the AI, and I love it. However, two problems just keep coming up. 1. The AI will MST its own cards, and occasionally mine, even in situations where that is absolutely retarded (case in point: MST'ing my Emergency Teleport. When I activated it from hand.). 2. The AI will Synchro using whatever levels it wants so long as the correct level monsters are on the field. I just had it have a field of Plaguespreader, D - Hero Doom Lord, and a stolen Stardust Dragon, and it Synchro'd my Dragon with Plaguespreader for Catastor. Other than that and the suicidal tendencies, it's awesome!