Which Orc hero do you prefer?

There's a bug with the Mask. It doesn't equalize levels; instead, it provides double the level difference. For example, I had a Krag at level 8, and the enemy hero I tested it on was level 39. The difference is 31 levels, so I received +62 levels for that battle. And being able to defeat 44 units of level 7 in just 2 attacks – I think that's incredibly overpowered... However, I'm not sure if using this bug is prohibited, just like using the bug with Reinforcement and the Ballista attack is prohibited.