Hi, don’t get me wrong. It is indeed useful that you lump the questions together as it gives me a better idea of what you want to achieve in total, which helps me in finding the best solutions for your particular use case. However, with a lot of different questions that all require a substantial amount of time to answer it is also useful to know which order you want to tackle them in.
In my experience, often some misunderstandings will appear as I’m coming up with solutions, and it is better to figure those out early rather than writing one massive answer where all my answers might be built upon a mistaken assumption.
I also have limited time to spend on support each day, so knowing which ones you have the most pressing need to solve is useful in that regard.
The number 3 is set as the default Status Value of the BP_Status_ManaGain component in BP_CardPlayer. In this component you will se that it sets Mana to its Status Value at the start of each turn. If you want to keep mana between turns you will want to use Add instead of Set.
BP_Status_Armor is a bit different. It is set to 0 at TurnStart, as you can see in its event graph.
Discarding the hand is handled in the BP_Status_Draw, also attached to BP_CardPlayer.