These decks still value actual prowess where it appears on creatures with a relevant power level and other relevant abilities
Secondly, each of these either provides a huge burst of card draw, a steady stream of card advantage, or has the potential to become a draw engine with a bit of a build around
The other honourable mention I want to talk about is The Capitoline Triad
That said, Id prefer a commander with more than a single ETB effect, especially if that effect wont be too impactful until later in the game
While its stats aren't much to write home about, thanks to its Landfall ability, whenever a land enters the battlefield under its owner's control, its owner may gain control of the target creature for as long as Roil Elemental remains in play
The Last Ride The Last Ride is a build-around card, like Death's Shadow before it, in decks that want to pay life to get benefits or cards