Thalias Lancers fits nicely with the devotion theme and gives you plenty to ramp into with Nykthos, Shrine to Nyx
While it benefits from the massive statline creep typical of modern creatures, having to give up both the payoff trigger and its evasion after the first activation keeps it from being any higher on this list
In terms of power, this new mechanic technically sits between its predecessors, but the mechanics strength is rarely the deciding factor
This includes self-milling and graveyard interactions
There is a structure to this (technically) 14-card pack
You can't choose multiple creature types, such as "Human Survivor." Card types such as artifact can't be chosen, nor can subtypes that aren't creature types, such as Kaito, Vehicle, or Treasure