I believe this is true regardless of how difficult they are to trigger, but emerging from Mortal Combat victorious seems like a breeze in a format like Commander where you can mill yourself to your heart's content with commanders like Grist, the Hunger Tide, Iname, Death Aspect (the mill comes from dumping your creatures into your 'yard on ETB), and Zask, Skittering Swarmlord
Returning Mechanic: Proliferate Resources are scarce in the wasteland, but those who are already rich tend to get richer
Orcish Bowmasters Orcish Bowmasters is one of the most influential creature designs in recent years
Flamekin Harbinger Flamekin Harbinger is another typal tool that sets up the top card of your library rather than actually putting a card in hand, but its only 1 mana to cast so it gives you some wiggle room to draw and cast that card
And then you can bestow it on your Commander to turn it into an 11/11 which will kill in two turns not three of Commander Damage and then draw cards, and then when it dies you keep the Crab around for another go around the bin