Deification (Halo Foil) (187) [March of the Machine: The Aftermath] [Showcase]

As this enchantment enters, choose a planeswalker type. Planeswalkers you control of the chosen type have hexproof. As long as you control a creature, if damage dealt to a planeswalker you control of the chosen type would result in all loyalty counters on it being removed, instead all but one of those counters are removed.