Tantalus

This unit has a 5+ Invulnerable save

While this model has 1-6 wounds remaining, each time this model makes an attack, subtract 1 from the Hit roll.

Each time this model ends a Charge move, select one enemy unit within Engagement Range of it and roll one D6: on a 2-3, that enemy unit suffers D3 mortal wounds; on a 4-5, that enemy unit suffers 3 mortal wounds; on a 6, that enemy unit suffers D3+3 mortal wounds.