Step 2: Login and Reach Summoner level 10 (It's only 4-5 games, I think it's worth it. this method only works if you are at summoner level 5, because at level 5 you have 5 mastery point, and that is what you need.)
Step 3: Copy my mastery page (1 point to Summoner's Wrath, 3 points to Resistance)
Step 4: Type the secret code (DRVyucr8) there (at the mastery page's name box, pay attention to the small and capital letters in the secret code. This is very importent)
Step 5: Save the mastery page, and enjoy your new champions!