Benny, Birthday Child

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.