So I was finally going through some of the cards that my son has and realised that they have used the same card a couple times across Waves 1 & 2. For instance, Wave 1 34 Handheld Blaster is exactly the same was Wave 2 34. Wave 1 38 Improvised Shield is exactly the same as Wave 2 36. Has anyone else noticed this? I was wondering if there was a reason known for this? Seems lazy to me.