Wondrous Item, very rare (requires attunement by a magic user)
This obsidian amulet is laced with a frame that appears as a ever changing mix of the chromatic colors. In the center, the five headed queen of dragons’ image appears with a stoic visage. This item can be used as an arcane focus.
When using this item as an arcane focus, you can use a charge to change the elemental damage type of the firebolt cantrip to any other element for 1 minute: cold, acid, lightning, fire or poison.
Notes: magic user
The above was originally discovered on the CritAcademy podcast (Google Play, iTunes, Soundcloud, YouTube), which is owned and maintained by Justin Handlin and posted here with his permission.