@DragonParadox, I've been meaning to ask for a while now. So we've got these in stock, the originals, and we were intending to keep them this way so we could study them at the height of their power.
How much would it take for either Rina alone or Rina with the help of Djinn allies to replicate the enchantment in full (Mettle + Evasion on the same ring)? How much progress would this project be?Brand of Winter
Description: Wrought of blue ice born of deepest winter, grown around the seed of a dying child's tear, these amulets hold great power and great cost, binding the fate of the bearer with that of Eternal Night.
Ability: The bearer gains Mettle and Evasion as bonus feats (takes no damage on successful Fortitude and Reflex saves where they would otherwise take half).
Special: Can only be used by Winter-Touched (UMD DC 35 to replicate). If it is worn by a non-Winter-Touched then it clings to them as a curse, and at midnight the next day after equipping the token the bearer must make a DC 22 Will save or fall under Winter's power.
With part of the project being that non-Winterborn people could safely use the rings, of course.
That is very likely impossible. Those rings work by drawing on the power of more than cold more than winter, they freeze the very soul and make it slip aside from magic like an echo of the void. One effect you could replicate, but not both.