The only reason Zulaport Cutthroat beat out Blood Artist is that it is a 1/1 rather than a 0/1, and has three creature types that can all work well in black Commander decks, over Blood Artist's lone Vampire typing
You really dont want to cast an aura for 6 or 7 mana these days, and cards like Whitewater Naiads or Silent Sentinel just dont cut it anymore
It has two abilities, both of which are going to annoy everyone youre playing with
Sometimes, he gets compared to a Phyrexian Arena but unlike the Arena, you already get that extra card on the turn you summon him
The first is that it doesnt produce mana, which was a theme on certain lands from Legends
Blast off to distant planets, wield dazzling magic...and maybe even wage a war with alien factions