If the battlefield doesnt really feel like it at the time, or right after a sweeping effect, just swing and you can just keep hitting
the cards in your hand, a path to victory.
They dont give you evasion or double strike, but being indestructible at the right moment still wins games
It does work very nice against Settle the Wreckage, allowing you to sacrifice the creatures that would get exiled to play new spells on your turn, but not so much against sweepers cast on your opponents turn unless you reveal instants
Think Baba Lysaga, Night Witch or Inquisitor Greyfax
Xantcha has always felt like a popular or topical general, to the degree that I was beside myself when my research uncovered that Xantcha is the fifteenth most popular Rakdos general