Mastemon, angel aggro version
The main focus of the deck is looping and reviving the level 4s to get in damage. Angemon helps to add power to the deck by allowing an extra check into security (as long as it dies).
One of the coolest interactions in the deck is between Ophanimon Falldownmode and Ignitemon, as Ophanimon can attack, then you can swing with ignitemon to delete both your Ophanimon and an opponent's level 6, which then allows you to replay a level 4! You mainly play a Gatomon but you can also play a rush Devimon to close out the game