Chromatic Armor
Enchantment — Aura, {1}{W}{U}
Oracle Text
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.
{X}: Put a sleight counter on this Aura and choose a color. X is the number of sleight counters on this Aura.