these are the most expensive cards in mtg foundations value Valuable Cards Magic: The Gathering Foundations FOUNDATIONS - TOP 10 MOST

If it had a +1/+1 counter on it, they will cancel each other out upon the nearest SBA check, which will allow Undying to trigger later

Ureni's Rebuff Sending a creature back to its owner's hand is usually a better way of dealing with it than sending it to the graveyard

There are 565 Zombies legal in Commander

A full budget zombie deck around it lands comfortably under $60

8 Liliana, Dreadhorde General Mythic Rare - $13.27 The regular version of Liliana, Dreadhorde General joins the ranks of the most valuable cards from War of the Spark, and it's easy to see why

Note that sagas only sacrifice themselves as part of the resolution of their last chapter ability, or if they somehow end up with more counters on them than they have chapter abilities, which very rarely happens and doesnt prevent their chapter abilities from triggering anyway