To unlock the full rules in the Warhammer 40,000 App, you must purchase a physical copy of the codex and redeem the unique code found in the back.

Grey Knights 40k Codex: The Ultimate 10th Edition Guide The Grey Knights represent the Imperium's most secretive and specialized weapon against the horrors of the Warp. As of , the official Codex: Grey Knights for Warhammer 40,000 10th Edition has been released, significantly expanding the rules originally found in the launch index. Accessing the Grey Knights Rules

The signature rule, (now often referred to as Gate of Infinity in codex lore), remains the backbone of the army. This allows players to pick up a specific number of units at the end of the opponent’s turn—depending on the game size—and place them into Strategic Reserves to redeploy in the following turn. Collecting and Playing Grey Knights

Leans into the psychic mastery of the Chapter's librarians and leaders.