Venti, Anemo Archon

As long as there are four or more lore counters
among Sagas you control, Venti 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.