Consider change hand peak mana cards from 1 to 2 or create 1 mana counter cards against those cards
Ok. I am a new player for a few months. I played the original Magic back while I was in the Navy in 1983. I am enjoying MTA. I have two points, I would like to mention.
First one, you have 1 mana cards like Duress that allows the opponent to see your hand and choose a card to discard. I believe "to be fair" is to have either an alternate card that is 1 mana to stop this from happening. If the player doesn't have these counter cards then it is their loss. It is extremely hard to come back after these players can have multiple cards like Duress used in game play or increase the mana required for these cards. The second point is usually do not spend real money on games but I enjoy MTA. You need to consider, increasing the mastery level for more items instead of infinite cards. I max out my mastery with 30 (average 9 hours of gameplay per day)