Age of Sigmar/Tactics/Warscrolls Compendium/Tomb Kings

Where Yo Mumma resides, and she's coming out to omnomnom some brains

Rules come from here [1] and here [2]

The only tactic you need is this:

1: Buy a single Tomb Swarm.

2: Deploy it as the entirety of your army.

3: Declare Sudden Death and choose Endure.

4: Burrow the Tomb Swam.

5: Hang around for 6 turns.

6: Win.

It won't work. As per the rules, if, at any point, you don't have any unit on the battlefield you lose.

A tomb swarm is removed form the battlefield when it burrows.

What about a unit of Carrion with there untargetable ability?