I don't believe that ENTP will top every second skill or ability mentioned on this forum. I've seen ENTP mentioned too often to believe in all that. Best card player? I'll analyze different kind of card games a bit.
I am sorry that I can't provide you with the names of the games in english; I only know them in finnish.
-some card games benefit greatly from memorizing the cards seen and keeping track of all the player's hands, cards played and cards that are probably still in the deck. An N and S may have the same ability, but an S will do this more likely.
-card games involving multiple participants and unclear structure and order probably favor those with good Ne. A person with well-functioning Ne, paired with Ti, can more easily see how the cards played alter the future of the game. edit: probably Ni, Te works with trying to influence the other person more, and seeing the other opportunities a bit less.
-card games involving many participants sometimes encourage people to form temporary alliences that change as the game progresses. Someone with strong Se might notice co-operative play earlier. Someone with strong N,F might more easily see how all the alliences are formed.
-bluffing style:
STP lively style, when bluffing or not. "go for it, hope for the best."
SFP "I'm an innocent rookie."
STJ planning style, seeing the possibility and working towards it with a poker face.
NTJ pathological liar style. Will make you believe them and tell you they lied. Repeatedly.
NTP alters their image often, making it doubt what is the real thing. Much like STP.
other, insufficient data.
-calculation of probabilities: NT
-games involving no or almost no interaction, or interaction with rigid rules: I
Who will most probably try to argue about the result of the game: ESTP
Most likely to peek other person's cards successfully without being noticed: ESTP
Most likely to ask special priviledges in the game, i.e. being forgiven errors they have made: SFP
Inventing new rules "on the go" as the game progresses: STP