Shrug it Off is a modifier that makes a card immune to the Injured status, to a target. All cards which are intended to perish (Egg, Chikichi, Pootie) would probably should start with this effect.
Additionally, a new charm called the Crutch Charm can be applied to units, allowing you to make sure units that are often in the line of fire, are crippled by reduced health/damage, or have self-destructive tendencies (cough Bombom cough) will not lose their usefulness.