card drop RNG

[deos]

I sometimes challenge her for fun (though I already got several terra, bartz, ok knight cards from trials) and I got all of her cards within no time

her droprate isnt a close as bad as other npcs and if you know what you do you can beat her 5-10 times per window, which results in a card nearly everytime

mind saying that again after getting nothing but 1star cards 10 rounds in a row?
sometimes i have to ask myself if i am playing a lottery or a card game -.-