Last, but certainly not least, is the main character himself. Like Ciri, Geralt also has an insane melee attack rating of 15. He's neutral as well, so he can be played by any faction, and he is unaffected by special cards due to his hero status.
What some players would get out of two, three, or even four attack cards, you get out of one badass Witcher who can guarantee victory on rounds he takes part in. I also have to mention that he has one of the coolest card pictures out of all the Gwent characters, which would make me want one even if it was a bad card!
Geralt is only accessible after progressing through the Novigrad story arc and completing the Deadly Plot quest. After this, play Thaler immediately or find him in the Seven Cats Inn to play and win the most sought-after card in the game.