Anyfin Can Happen is a single-card OTK in this deck, with specific condition. This condition: 7 murlocks died this game. There is no possible combination of murlocs, that don't OTK this way. And 7 murlocks can only be achieved through use of the first copy of Anyfin Can Happen.
So general gameplan: you play your murlocks, trade them. Stall the game as much as possible, so we can draw other murlocks. Use first Anyfin Can Happen to clean the board or push lethal damage. Use second to kill.