If I take one point of damage from an attack and have multiple abilities (from ability cards or items) which give me Shield when taking damage from an attack, do I have to use all of them?
If I take one point of damage from an attack and have multiple abilities (from ability cards or items) which give me Shield when taking damage from an attack, do I have to use all of them?
No
No. You can choose which Shield bonus to apply in this case, and once the damage is reduced to zero, it is no longer a source of damage, so any other bonuses do not have to be used.