Once Bolas, the Arisen hits the board, the +2 refills your hand, the 3 can clear threats, and the 4 brings back game-ending permanents
If the target of any of Deathrite Shaman's three abilities is an illegal target when that ability tries to resolve, it won't resolve and none of its effects will happen
It can shut down any of your opponents spells that let them take bonus turns, locking them out of any sort of combo shenanigans they might have up their sleeves
Commander Decks Edge of Eternities comes with two preconstructed Commander decks
All of this was wrapped in a control shell with countermagic and card selection
That doesn't mean you'll only be using the two damage to each opponent option exclusively, but it's gonna be hard not to if your commander is in play