Hello again, tamashii. there are a few mana/energy disruption cards already in the game, but we have a few more mana disruption cards in the works in coming card expansions.
You cannot imagine how hard it is to code good AI. If we were to code EVERY instance on 120 different cards for the OTHER 120 cards do you know how long that would take us? the year 2714. that's how long. lol. You have to manually enter every single instance into the db... now you see why MTG(R) has not done anything like this. lol. what do they have like 5billion cards now? our sun would burn out before they could get all of the individual instances coded.
The training idea is a good one, unfortunately our database isn't set up that way and for us to do that we would have to completely recode it from scratch. For your issue with the missing cards, i don't know what to tell you?? that's just strange. some players are having issues with the Blue Orb profile, but i've not heard anything else about missing cards! i'll talk to my partner about that and see if its something on our end or a weird glitch just on your ipad. :P