Tomb of Levistus is terrible?

[strangebloke]

Not every enemy has repeatable, huge-damage methods of attack at their disposal. For instance, let's say you're going up against an Ancient Blue Dragon. He breathes on you, and you Tomb of Levistus to save yourself some damage. Sure, you lose a turn, but that Blue Dragon might not have his breath weapon up when you come out of it.

Exactly, it's essentially

"Sacrifice your next turn to negate all damage to you until the end of your next turn."

Which is fricking awesome. Disintegrate? Negate it. Ancient white dragon breath attack? Negate it. Assassin hitting you from stealth for 200 damage? Negate it.

It's not so much useful for staying alive when you'd otherwise drop, but amongst panic buttons its one of the best.