Lets say X=5
You can play Falconer in any white deck, but Abzan is the optimal home for it
The second thing you need to know is that he will absolutely win you games, and people will often be perfectly fine losing to him
However, if you can boost his strength high enough that he wins skirmishes (generally using possessions, Noble Leaders (7R112) , The Last Alliance of Elves and Men (1R49) , or Merry, Friend to Sam (1R302) ), he can discard those minions for you, similar to the way he's used as ring-bearer
The tournament wasnt large, but it was full of stock decks from what I saw: Mono-Red, Green Black, Green White, a couple Teferi, a Mono-Blue player, etc
But now it's time to take a closer look at the individual cards in the precon: 44 Lands