Please do not base it in RNG, you will kill any competitive value or joy that could be derived from such a beloved & nostalgic mini-game.

Both FF 8 & 9's card games had their own unique strengths & weaknesses.

Both are loved in their own way. However, FF9's Card Game was utterly ruined by RNG. Against AI, this is less of a matter, but against Humans, it will break FF14's v.

For those unaware, In FF9 cards were assigned a power value paired against an opposing card's defense value. An ungodly card could still lose to a bottom-tier card bc of true RNG.

It was all chance with probability mixed in. A card with power of 10 could roll a value anywhere between 1-175 while a defense of 1 could roll between 0-15. Sure, you up your odds having a greater power differential but you could still lose.

Please do not repeat this mistake in FFXIV's Card Game.