Chromatic Armor

Enchantment — Aura

Enchant creature

As this Aura enters, choose a color.

This Aura enters with a sleight counter on it.

Prevent all damage that would be dealt to enchanted creature by sources of the last chosen color.

: Put a sleight counter on this Aura and choose a color. X is the number of sleight counters on this Aura.

Chromatic Armor is on the reserved list, which means WOTC has self-imposed restrictions from making functional reprints of this card.