Tried to play system Override and it locked up my game. It didnt freeze it. I just wouldn't play the card. And while i tried to play it just waited for a while and then used all my timeouts. This caused me to lose a draft game i was wining as i was going to try and steal a creature and swing for lethal....I could then not play any cards for the rest of the game, but i could watch my opponent take their turn and play cards just fine. When i played cards they would then sit as if they were on the stack but never resolve.

Clear Steps were as follows:

1. Entered first main phase on my turn, attempt to play system override.
2. the game waited about 40 seconds before the cards asked me to target a creature or artifact, however at this point i could not target anything (despite valid targets on the board)
3. The card then sat in the 'watiign for target/stack' area of the screen (the right side) even on my opponents turn. I could grab and move the card back to my hand, but on my next turn i could not cast it or any other card.