[Taqwus]

Depends what one's up against.

Invulnerability is slightly dodgy if going up against... poison-happy people, IIRC.

The design in thread doesn't counter cold (Frozen Heart, say) or lightning. Depending on what one's up against, that might not be a problem.

Flight might be useful against death-heavy folks (combo skellispam to block you, drain life or disintegrate to kill you) but at least the sword and shield allow one to hurt multiple opponents per turn.