Riot Talisman

Item: A mask from centuries long forgotten, it was stolen from a museum of some sort in Riot and Dizzqo's first "expedition", and thus became a trophy of their first job. It then became almost essential for them to wear whilst out on the town, and they are rarely ever seen without it.
There are portal runes carved around the inside rim of the mask, and will glow when travelling across worlds. The green markings and teeth paint will also glow when exposed to magic.