The Sons of Velmorn

Sir Jedran Falseborn has a Wounds characteristic of 4.

If the unmodified wound roll for an attack made with a melee weapon by this unit is 6, that attack causes 1 mortal wound to the target in addition to any damage it inflicts.

Once per turn, at the start of the combat phase, you can say that this unit will form a shieldwall. If you do so, this unit has a Save characteristic of 3+ instead of 4+ until the end of that phase. However, if you do so, this unit cannot make pile-in moves in that phase.

At the start of the combat phase, you can pick 1 enemy unit within 1" of this unit and roll a dice. On a 2+, that unit cannot make pile-in moves in that phase.