I have yet to find a good use for the training cards. You pay 2 resources and get no immediate value that affects the board or draws cards. Say you want to reshuffle a powerful card like Turn the Tide. At 3 damage/1 resource it is one of the most efficient cards of the game, but if you add an extra resource to that from playing the training, you have mitigated that efficiency. I think you need a unique and compelling reason to play this. Like maybe you are in multiplayer and Spider-Man is necessary to beat some massive schemes. I believe this is a fun card that gives consistency to certain strategies at Standard or Expert difficulty levels, but if I am trying to build the best Justice deck possible I don't think I will include this.