Ring of Shadow Guard

Property: Gain resist 10 cold and necrotic.

Power (Daily - Cold, Necrotic): Standard Action.
You infuse your shadow with the essence of the Shadowfell. Until the end of your next turn, any
enemy that starts its turn or moves adjacent to
you takes 2d10 cold and necrotic damage.
If you've reached one milestone today, you also
gain 15 temp HP. This benefit lasts until none
of these temporary hit points remain or until
you take an extended rest.