Hello everyone !!
Idoneth subfaction Nautilar is getting some love in the next Battletome :
It's a bonus of -2 rend to the fins and -1 to the jaw, it's huge for the fins as even you account for All-out Defense it's a scary attack with 4 damage (it's 4 attacks presently)
The similitude with the Approach used for the Nurgle Battletome is apparent, a small faction that transforms one unit Battleline and gives them a buff.