Well, I've been unable to access a computer today, so I'll explain what I forgot from my phone.
Anyone remember back when we tried to mke Grail War RP's not be freeform, and used the Fate system?
Yes, shudder at the memory of when everyone had a bazillions skills because they would give themselves a token weapon skill and then stack on both Eyes of the Mind and Instinct if they were being conservative.
Now, remember the whole Aspects thing? Accept a Compel, get a Fate point? Something like that is being done here.
So, when you send your character, include some Aspects to Compel. These no longer cost a Fate Point to resist, but instead of using them for some form of benefit, you can use them to cheat harder in card games.
Have a card without a luck based effect? Burn a Fate Point, get the result you want, unless your opponent does the same to counter you.
More importantly, you can use a Fate Point to Destiny Draw, where you believe in the heart of the cards and it rewards you with a the exact card you needed, even if it was at the bottom of your deck before you drew.
The details are still being worked out, but there would be limit on how many Fate Points you can use in one Duel, and you might be able to earn some outside of Compels by other means. Hasn't been decided yet, but I'm considering entertaining characters, accepting your opponents 'Zombies are immortal' logic and maybe winning games to be ways of earning more.
tl;dr: Make things entertaining and you get rewarded.