Lesser Restoration is a level 2 spell that tons of classes can cast and has no material components. Getting cured of the horrible blood plague isn't that difficult.
This reminded me of how system really affects player behavior. I was playing a game where doing some things would trigger a check to avoid consequences.
There was a lot of "I'm gonna shoot him" -> "ok but you'll have to roll for humanity loss" -> "...fine, nevermind, I'll talk to him instead"
Remember to save these for when the party are getting a little too "morally grey", because unless you're running a "dark and gritty" campaign then it will discourage them from ever wanting to get in a fight!
You loot the kobold's body. You find a note that reads:
"Dear Krag, I miss you so much, and I pray for you to return soon. Our clutch of eggs is due to hatch, and more than anything I want the first thing they see is their devoted father..."
Well yeah. The goal is to humanize the person they just killed, to make the players potentially regret their murderhobo ways for a brief moment. And one of the fastest ways to make a character (at least shallowly) altruistic is to have them pet the dog. Do something kind for something/someone innocent. It’s often used to show that an antagonist isn’t entirely evil, and is acting against the party due to a specific goal (rather than simply being evil for evil’s sake).
It’s the inverse of the “kick the dog” trope, where a character does something obviously evil for no narrative purpose other than proving that they are evil.