[Agema]

Assassins getting the first turn would make them enormously powerful. Think of scenarios like having flying boots for two immediate dagger attacks on the target, a bow of war for umpteen arrows and so on. We're talking potential instant kill in many circumstances with very cheap and early Construction requirements.

Selecting a target also makes them incredibly powerful. I'm sure someone prepared to put a bit of effort into equipping their assassin properly could quite easily find and kill a humanoid pretender God (although maybe not a titan or monster.) Particularly if they get first move as well. Also I think Blood has access to an artefact (Dark Heart?) that gives characters the assassinate skill: a thug/SC with that could select and pick off the lynchpin commanders and mages of an opponent.