Ok, the last thing you want when needing a fire is to think you have your bases covered only to find out that cheap chinese magnesium fire started is a piece of crap. This video shows the difference. Buy a Doan for $7.99. Test it and learn how to use it because your life may depend on it should you need a fire in an emergency:
Enjoy these instructional pictures.
If you want some emergency tinder to get that fire started you can make some by soaking cotton balls in vaseline or buying some pre-made tinders on Amazon for $2.99: