Timeout
Opponent had hundreds of triggers on the stack due to over 50 creatures entering the battlefield at the end of turn and having at least 5 creatures that gain 1 life when another creature enters plus another couple of when you gain life put a counter on a creature effects. While resolving they timeout out which is fair enough! but then I timed out. Waited patiently for for all the triggers to resolve (let the dogs out, put some washing on and went to the toilet!) and for my go to start but immediately lost due to timeout despite not having an option to do anything. Consuming tide would have got me back in the game at this point so pretty disappointed! Would have been an epic comeback.