My opponent had 9 mana available. They used 5 of it to cast that red saga that steals a creature targeting my patchwork automaton and then paid 2 mana for the ward cost. I then had another patchwork automaton out which my opponent targeted with a 2 mana red (deal 3 damage spell) I believe it’s called kami flare. My opponent didn’t have to pay the ward cost and then ended up killing my creature and then winning the game.

I should have had 1 creature back in order to block and stay alive and win the following turn. But for some reason there was a glitch and my opponent didn’t have to pay the ward cost which they couldn’t because they were out of mana.