Looking at it statistically
Well, there are 56 cards in a deck of Guardians:
52 cards
2 jokers
1 double backer
1 ad
This means the odds of guessing 1 card right is 1 in 56.
Since you get three guesses, the real odds are about 1 in 18.66
That means the odds of guessing two cards right is about 1 in 348.
So that means, in theory, if my post is the 348th, and it's something nobody else has said yet, then I'll win the contests.
Eh. Too much work.