Inu

Hi everyone. Somewhat new player to AoS here, with Ironjawz army and less than 10 games played. In short: With more than one Warchanter in army, can I use Violent Fury with all of them in the same phase? Why I'm asking: A recent game with Da Choppas and 2 Warchanters made me and my opponent feel like we're missing some rule. I know that command abilities can only be played once per turn, but as far as I know, Violent Fury is not a command ability. So, with more than one Warchanter, can I really use Violent Fury multiple times? With 2 Warchanters and Da Choppas, this means I can give 6 units a bonus of +1 damage to all melee attacks, effectively multiplying the strength of my army -- completely free (no command point costs etc.). Da Choppas bonus (target 3 units instead of just one) only affects brutes and ardboyz, but still seems a bit much, since both of them mostly do only 1 damage per attack, so +1 bonus doubles their effectiveness. We both thought that's kinda over-powering, when applied to 6 units at a time, but couldn't find a rule (or even forum discussion) that would state a limit for Violent Fury's usage (other than a unit can only have one Violent Fury bonus at the time).