Tormentbringer on Exalted Seeker Chariot

This model has a 4+ invulnerable save.

While a friendly SLAANESH LEGIONES DAEMONICA unit is within 6" of this model, melee weapons in that unit have the [SUSTAINED HITS 1] ability.

Once per Fight phase, just after an enemy unit selects a SLAANESH LEGIONES DAEMONICA unit from your army as a target, one friendly PSYKER that is within 6" of that SLAANESH unit and has this ability can use it. If it does, until the end of the phase, each time a model in that SLAANESH unit is destroyed, roll one D6: on a 4+, do not remove it from play. That model can fight after the attacking model’s unit has finished making its attacks, and is then removed from play.