elseif effect == "Bust" then
        local cardsInZone = findCardsInZone(setTarget.z)
        if #cardsInZone ~= 0 then
            clearCards(setTarget.z)
            destroyObject(powerup)
        else
            broadcastToColor("Must use powerup on a zone with cards in it.", setUser.color, {1,0.5,0.5})
        end