Unofficial quick reference. Core stratagems come from the 11th-edition Core Rules, chapter 15 (Wahapedia); detachment stratagems from the faction pack (Tyranids). When a stratagem can be used is read from its WHEN text and checked against the phase icons of the card. The phase steps are the ones of the Reference Sheet, and the unit abilities are the reminders written on each army page. A stratagem shows up in a phase only when its WHEN allows it; the target and restrictions still have to be checked on the card. When in doubt, the Core Rules win. Data: Wahapedia Core Rules (11th ed.) + Wahapedia Tyranids faction pack (11th ed.), faction pack v1.2 + Wahapedia Space Marines faction pack (11th ed.), faction pack v1.2. Fetched 2026-09-21.