How do I know what card is giving me a bonus (newish player)

[rawrfaker]

So in the new event that started today, I realized that I have a bonus of x1.11. I don't know where it came from but through research I think I have narrowed it down to being an N card. Do I just need to look at every card or are they marked a certain way?

ty

[Tenhou]

Go to the gacha and click on card list. Any card with a tag above (like "beta") it is a bonus card.

[PrimalShade]

It's the same N card that gave a bonus for PeroPero Shards, Ayahi Matsuda.