The bad news: Summoning an entire elder god is hard. They end up summoning one of the innumerable lesser horrors in the elder god’s orbit.
The good news: The summoned entity is going to grant them immortality.
The bad news: The players will experience an eternity of never-ending horror and torment.
The good news: Since it’s just a (relatively) lesser entity, the players actually have a slim chance of ending this curse, returning to blissful mortality.
The bad news: Summoning an entire elder god is hard. They end up summoning one of the innumerable lesser horrors in the elder god’s orbit.
The good news: The summoned entity is going to grant them immortality.
The bad news: The players will experience an eternity of never-ending horror and torment.
The good news: Since it’s just a (relatively) lesser entity, the players actually have a slim chance of ending this curse, returning to blissful mortality.
I like the idea of offering them (instant) mortality as a merciful way out.
They can only become mortal again if they transmit their curse of immortality to a loved one.