Designer’s note: As part of our continuing efforts to make sure that matched play remains a fair and competitive way to play Warhammer 40,000, we felt it was necessary to review how Ynnari armies played in light of the changes made in Codex: Craftworlds. When Index: Xenos 1 was first written, Ynnari armies were playtested using the datasheet rules and points values printed in that book. With the introduction of new Stratagems, improvements to several datasheets, and a general reduction in points values for Codex: Craftworlds units (and anticipating similar changes that will be made in Codex: Drukhari and Codex: Harlequins), it was felt that we needed to address the balance of Ynnari armies so that they remain a competitive army to play with, and against, in matched play games.