He was working for Flim and Flam to sell their bogus product with acting and direct payment. His card's info says: RB10-EN112: My Little Pony Silver Shill LIGHT / Pony / Level 4 / ATK 1600 / DEF 1200 Once per turn: You can add 1 "Flim Flam Tonic" from your Deck or Graveyard to your hand. You must control "My Little Pony Flim" and/or "My Little Pony Flam" to activate and to resolve this effect. Common
