Each deck comes with ten new-to- Magic cards, the face card and another powerful legendary creature each in traditional foil, plus the foil-etched display commander
During any turn you attacked with a commander, you may play those cards
That can be commanders that help you draw cards, provide ways for you to avoid being mana screwed, or just ones that keep the game moving and interesting
D20s make sense thematically but are annoying from a sheer equipment required to play the game standpoint
Outlaws of Thunder Junction s Bristly Bill, Spine Sower is a sort of bridge between the two archetypes
This alone would make Karlov a worthy Lifegain Commander, but it can also exile creatures at instant speed, in exchange for six +1/+1 counters