The problem that most people who are somewhat, disappointed lets say, with Triple Triad card acquisition is that you often run into these VERY nasty combinations of Difficulty, Grinding, and Time Gating.
There are NPCs who give 2 star cards, that you need to get your 30 to unlock free use of 2 star cards, who's hands have multiple 4 and 5 star cards. 1 star hand vs 4/5 star hand constitutes MASSIVE difficulty.
Well, as we all know and many have proven, we CAN defeat these vastly stronger NPC hands... IF the regional rules are in OUR favor. Things like Plus, Swap, Reverse, and sometimes Order, can give us the edge, especially Reverse, against the NPCs. BUT these regional rules change once a day... And I am pretty sure that some do not change at all.
This is a form of Time Gating. There are going to be NPCs who are going to beat you 99% of the time, because on this day, they are playing with Random, so your hand is magically all 1 stars, and their hand is, again magically, still all 4s and 5s. Maybe tomorrow they will be Plus, or even Reverse!... Oh how we will all spend a day THRASHING Hab if he ever goes Reverse... But yes, this is time gating.
And the grind... um, yeah... "Atma-like" drop rate is fairly correct.
I got Memeroon's card in 1 try. Got Momodi's in nearly 100 wins. Spent 4 hours going against King, got 7 Godberts, came back in an hour, 1 round, 1 win, 1 Bahamut card.
Sounds like Atma again doesnt it?
Understand, we are not complaining because we want everything on a silver platter right f*cking now. We're complaining because there are SEVERE difficulty imbalances. The grind IS real AND you only get a chance to get a card IF you win, which against some NPCs you will have a 10% win rate, UNLESS the rules that they play by on this particular day are favorable for you... of course this means that on some days, there will be NPCs who are nigh unbeatable. Try consistently beating Rowena with Random. Unless she makes 3 terrible moves, you will not win. But Rowena with Plus or Reverse, you can win a whole lot more.