Pick a visible point within 6" of this fighter that is on the battlefield floor or a platform and place a token there. That token is an ash bomb token. While an enemy fighter is within 3" of any ash bomb tokens, subtract 1 from their Toughness characteristic and subtract 1 from the Attacks characteristic of attack actions made by them (both to a minimum of 1). At the end of the battle round, remove the token.
Building an army? Create, validate and share your list with New Recruit, army builder for Warhammer Age of Sigmar: Warcry and many more games.
Try the builder