cr:7.5.5c

If a rule or effect prevents a triggered effect from triggering when the active-attack hits and/or when it deals damage, then the triggered effect does not trigger on the hit-event.

Example: Stamp Authority has the text “Attack action card effects do not trigger when they hit,” which prevents triggered effects from attack action card triggering on a hit-event. If a triggered effect from an attack action card would trigger on damage being dealt (e.g. Blizzard Bolt), and the attack action card hits, the effect will not trigger on the hit-event.