I have a text file with  on every line a magic card number and such info

eg: 072 GTC U Mental Vapors

I'm trying to read the file line for line and append each line to a file 
named foozled.txt.
I wrote a method to_s it prints to screen right with output :
072  |GTC| U | Mental Vapors
but I need this output to append this to the foozled file.

how can this be done?
it now prints nil on each line in the foozled file


------------> snipped code
File.open(cardList,"r") do |file|
     file.each_line {|line| line.length
        parse=Card.new("#{line}","#{line}","#{line}","#{line}")

      File.open('foozled.txt','a') do |line| line.puts parse.to_s 
#appends only nil to the file but prints to screen
        end
     }
end