This coin made of light blue resin has the Abjuration Rune engraved on both sides. If you look closely, it emits a lightly pulsing blue aura.

Using a bonus action, you can flip the coin to use it. Once you do, it dissolves in a blue flame.

When used, you have one charge of the Resistance Cantrip to use on yourself or a target. If the charge is not used within 1 hour, it dissipates.