mtg un commander deck Basic Lands Pack - Secret Lair / Borderless / Un-Lands 1 life tracker MTG Commander Commander Masters :

That includes each Saga card in the set

That was true for the entire block, in fact

But with Mirror Gallery

Once you have enough Treasures, you can dump all that mana into a Hellkite Charger, and you have yourself an infinite combat loop

Players can choose to place one of their active Characters onto a Location for a move cost, which is listed on the lefthand side of the card

Both the face commander Dina and the old Dina, Soul Steeper care about lifegain and sacrificing creatures, and Beledros Witherbloom herself helps to contribute to that theme really well, not to mention payoffs like Veinwitch Coven and Blight Mound (both reprints from the OG Strixhaven precons)