Theres a cheat to this card. Discovered it by accident. To get the desired flip. But it doesnt work if you have a quickplay or trap set and you get the prompt to activate. But just know. There is a cheat to use it.
I have only gotten my cup of ace from a gold pack and winning by deck out against the AI josh. I have tested it 10 times and 2 of the 10 i have gotten my cup of ace. Have yet to get a cup from any other AI from a deck out than Josh.
Rare indeed. I get more RNG UR drops from SD than I do the Cup of Ace card. It kinda sucks the difficulty because a mill deck is my next build. I have every card except the 3rd cup of ace. It's a grindy process and hell i don't even know if my strategy even works or if it was just pure luck.