Commons and basic cards only. A 3/60 with Ranged, and when he deals damage to something, he deals damage to every adjacent enemy as well ("enemy" being you), but also he receives all damage he deals. Starts with a Golem Vanquisher (2/4 all Golems get Provoke) in the middle of the board.

Have a pretty complete collection? Watch the regular version here:
http://www.dailymotion.com/video/x5nmug6_duelyst-boss-battle-11-automaton-8_videogames