The Impossible Girl

As long as there are four or more lore counters
among Sagas you control, Tom Bombadil has hexproof and indestructible.
Whenever the final chapter ability of a Saga you control resolves, reveal cards from the top of your
library until you reveal a Saga card. Put that
card onto the battlefield and the rest on the
bottom of your library in a random order. This ability triggers only once each turn.