Pathbuilder has this option, look for Campaign Management in the hamburger menu

I think there’s something mystical about the first encounter of a game that’s specifically made to introduce new players. first two rounds of combat, the only thing that did damage from the player’s side was magic missile from the wizard, their rolls were abysmal, and my rats crit twice.

There’s something about rats in the beginner box, I’ve run it four times, twice as a GM and twice as a player. At least one person went down to the rats in the basement or the cinder rat (or both)