Released in August 2017, the 8th Edition Codex: Grey Knights
Classic Grey Knight gameplay, but easily countered by "screening" units. Grand Masters in Nemesis Dreadknights Grey Knights 8th Edition Codex Pdf
They were incredibly expensive per model. Losing a single Strike Squad member felt catastrophic, yet they lacked the invulnerable saves or "Feel No Pain" mechanics to survive the increasing lethality of the game. The Bolter Problem: Released in August 2017, the 8th Edition Codex:
For a brief window, a massive block of Paladins with layered defensive buffs became one of the most unkillable units in the game. 4. Fluff vs. Tabletop First to the Fray: +1 to charge rolls
Psychic Prowess: Every unit in the army is a psyker, featuring the Sanctic discipline and a modified "Smite" called Rites of Banishment. This version of Smite had a shorter range (12") and lower damage (1 mortal wound) against most targets, but increased damage (3 mortal wounds) specifically against Daemons.
When looking back at the Grey Knights 8th Edition Codex, it is remembered as a book that successfully captured the flavor of the army, even if the math was occasionally broken. It made the player feel like a daemon-hunting elite force, capable of deleting enemy units in a single turn of combat and psychic output.