I'm in the exact same situation. My 5 year old got creamed by the Exploding Runes AND a s*%&ty role against a Skinsaw Cultists. We chased off Black Fang at our first encounter but he only has 3 cards left in his draw pile. I want to walk away from the scenario but it feels like there is no penalty for that.
How would you ever die if you could just choose to stop playing at any point? Is it because you have to draw to finish your turn so you could get surprised by something wiping your hand?
I feel like there should be some penalty for "running away", like 'banish a random item from your deck' (i.e. it was dropped while fleeing). (ooh, ya, I kinda like that)