The One Ring hits the lava and Frodo’s XP bar lights up like a pinball machine. The Halfling scores like 25 zillion experience points and levels up from maybe a basic level 3 to a legendary level 89-ish (give or take an RPG system).
Frodo spends all that XP on a massive wisdom bonus, some themey deleterious character attributes, and the ability to see the future. It does him about as much good as Paul Atriedes, but in-story where does this epic-ness come from?
Check out EPIC LEVEL FRODO for insights into the player’s handbook stored in Tolkien’s head.