Player “ played a spell” but no spell enter the stack and all my permanents remained but no longer worked. It was like a board wipe but I had enchantments and indestructible creatures. They were not interactive to attack and the enchantments were not effective. My opponents hand still had the same amount of cards. There were no spells in his graveyard that could board wipe at any level or in his exile. No spells went on the stack when it happened. His land tapped and then his turn was just done and I was ineffective. It seemed like a hack honestly. I left the game and came back all the card I had (xenegos, rhonas and 2x bards tale) were in my hand. Again I checked his graveyard and cards in exile for a spell that could have done it, and again no spells that could clear or return cards. I added a photo of what I could still see when my cards were frozen in place.