Players make their way through a series of procedurally generated levels fighting monsters, acquiring items, and growing more and more powerful until they either die (in which case they lose all their items and must begin again from the start) or defeat one of the final bosses
Apart from the new partner commanders and the four-color face card, you get two Esper commanders, a Boros commander, a UW Commander, and two mono-red commanders, all of which deal (at least, to some extent) with the artifact theme of the deck
If you add another mana, there are plenty more effects
Gold had given these players the ultimate cheap and easy deal in life gain by combining the life-gaining abilities of green and white
Vraska, Golgari Queen One of my favorite planeswalkers, Vraska, Golgari Queens mostly useful as a card draw engine that shelters your life total as your opponents focus on it