Tera Rule Issue

LetchaB

I've been trying to figure this out. I understand that Tera rule will prevent damage done to the Tera when on the bench. I believe, from what I could find, that if you have a duplicate Tera ex, one on bench and one in active, then the rule only is supposed to apply to the bench ex. However, a couple days ago, I was playing against a Tsareena ex and was unable to attack with damage to the Active Tsareena ex once a duplicate was placed on the bench. I then realized that it wasn't the same for my Charizard ex, Arcanine ex, or Garchomp ex I have played against or used. That Tsareena ex could not be damaged. It was registering a 0 every round I tried to attack. I triple checked that no other card effect was played. Is Tsareena ex bugged, did I encounter a cheater, or am I not understanding the Tera rule?

TechHog

Protip: Never make an assumption about what the problem is. Just read every card in play. This was after it attacked you, and they had Vanilluxe in play, correct? If so, read Vanilluxe.

PachirisuFan1

Panic Mask is also possible if the active tsareena had one attached. To be clear this is assuming your own active had 40hp or less.