Interesting Purity trophy glitch

[Niilismo]

I just encountered a glitch where Purity unlocked when it shouldn't have. I was going for an infinite deck run and was using Dual Wield to duplicate my only copy of Dropkick. I had 7 cards in my hand and my draw and discard piles were both empty. When I played Dual Wield, the game prompted me to pick a card to duplicate, which temporarily hides every card in your hand that isn't eligible (i.e., not an attack or a power). As I only had 3 attacks and no powers, this meant that for a moment only 3 cards were visible, which made the trophy pop.

 

It happens at around the 19 second mark in this video: https://i.imgur.com/1EABKdB.mp4

 

The video doesn't show the trophy notification, but the trophy screenshot shows the exact moment it popped:

 

 

 

Just thought it was an interesting glitch. Might be useful if you're struggling with this trophy, but it requires a very specific set of circumstances to trigger.