First you need the enemy knight Lezales to spawn with the Pisces sign (so he has worst compatibility with Gafgarion), Item for his secondary skillset, and the ability to use Potions unlocked, and then you need to be able to kill everyone else but Gafgarion and Lezales (which itself requires a ton of luck to do before Lezales dies, especially with killing Agrias)
Incapsula incident ID: 569000121294827664-360672880901030699
I recommend the Jewish Museum in Berlins page on golems as a starting point for learning more about these mythical beings
All in all, this seems like a solid card that could see Standard play as long as Winter has a home
If we could exert a pressure on the Magic design teams to focus a little more on cards that make Magic a better game and reduce the value ascribed to such effects that aid that end then the whole Magic experience could be seamlessly enhanced for both casual and professional play
This article is only going to go over the new cards debuting in the deck, but there are a lot of old winners in there as well