Tom Bombadil

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.