As an additional cost to play Knick Knack Bric-a-brac, you may destroy any number of Copper, Silver, and/or Gold you control. Search your deck for a card with Amulet, Potion, or Talisman in its name, put it into the arena, then shuffle. For each 4 Copper, 2 Silver, and/or 1 Gold destroyed this way, repeat this process.