Take any Magic: The Gathering deck you have and battle it against the might of the titans. The player using the Magic deck, will have the walls to hide behind, but not for long! At the beginning of the Titan player's turn, they roll 1d20 and apply the following result. Then, they spawn a titan of equivalent strength to the difficulty setting its on.

The Titans attack the walls, each having 30 life. Once a wall is destroyed combat ends. The MTG player must survive 10 rounds without dying.  

MTG X Attack on Titan

Attack on Titan x MTG
Attack on Titan X MTG