Ethersworn Shieldmage
Alara Reborn — common
Artifact Creature — Vedalken Wizard
Ethersworn Shieldmage rulings:
2009-05-01: When Ethersworn Shieldmage’s triggered ability resolves, it doesn’t lock in which permanents will be affected. For the rest of the turn, any time damage would be dealt to a permanent, check whether it’s an artifact creature at that time. If it is, that damage is prevented.