Just a control deck with a weird endgame.
And you can do this twice, so you can do both combo's if you want. Your options for combo are:
Leeroy Jenkins. This will result in 5 leeroy's total over 3 turns. AKA 30 damage. You can then shuffle in 2 more for a second round OR
Zilliax may also be a good choice.
Or you can play Elekk + banker + banker to shuffle in 2X elekk and 2X banker to go infinite.