The radiant phoenix feather is a trinket that can be obtained by opening a gold box purchased from a bank . It was first seen in release 2012-03-21. Beginning with the June 2012 round of gold boxes, the radiant phoenix feather was no longer available in multiple colors. The default color was set to red. For the initial release in April 2012, the trinket was available in all the colors of the gold box trinket palette, including spring green, the limited edition color for that month.