The game froze on my oponent turn while casting cycle of renewal. The spell got stuck in the pile and never let me chose any land to sacrifice. On my turn, i was not able to cast any spell as my pile was still stuck with cycle spell. I had to log off and log on, it took me 2 turns to come back in the play and was unfortunately far behind on board and cycle did stay in my hands. I couldn't recover from this issue and lost the game that I was far from losing if my spell would have been casted normally as I would have had mana, board and hand advantage.