Can someone help me come up with both a positive and a negative for a couple Hag deals my players made? (5e)

My players ran into an old woman in the woods and found themselves kind of desperate. Everything she did told them "Do not make a deal with this woman. She is a hag." But, 2 of the 4 of them did anyways.

The first one is on a mission to retrieve a weapon that her father used to try and slay a monster in the mountains to the north. She heard through a seer that the weapon didn't kill it, but has been imbedded in it so long that anyone who tries to pull it out would feel the power of the monster and die. Someone would have to be REALLY lucky to pull it out and survive. So the hag gave her a potion that "syphoned her good luck to use for the future." a number 13 spawned kinda like a tattoo on her skin and until she pulls this weapon, she's gonna be extra unlucky.

The effect of the potion read as follows: Whenever she rolls specifically a 13, it is considered a nat 1.

I'm looking for a positive side for this as well. Like maybe "Whenever you roll a 7 it counts as a natural 20", but this is only going to last as long as it takes for her to get to the north and pull the weapon from the monster. And I'm having a hard time making a luck based positive for this. Or maybe I could grant her Inspiration at the start of every game? Something thats like her taking some of that luck back? Or maybe, due to her suffering at the hands of this hag, maybe I just make the weapon "too good to be true" eventually? Any advice on that would be great.

The second person, wished to know how to decipher the whispers that would come from the spirit realm. He got a potion as well.

His potion allows him 1/week to ask a yes no question about the spirit realm or anyone associated with it and get a true answer from the spirits who live there. (the spirit realm is currently where the current BBEG is from, so he can straight up ask something like "Does the BBEG know we exist?" or "does the Ancient Spirit's influence flow through someone in this town?")

This one, i needed a negative for. A big one. The hag who gifted him this ability said that "it might come at the cost of a memory, or a future memory. She "wasn't sure". But at the moment he is currently a walking telephone for the spirit realm.