an Intercept stack will not be removed. However, if a crowd control debuff that cannot be blocked is placed on a Champion with both Intercept and Block Debuffs, an Intercept stack will be removed.
https://plarium.com/forum/en/raid-shadow-legends/674_game-discussion/197896_3-changes-to-make-gurptuk-moss-beard-better-/2/ I think the thread was a very good thread. It explained a lot of the issues which everyone was having with the hero. Moss Beard needs to heal or shield more....