I don't want to viloate any rules, so I'm not going to post magic items and such.
Powers:
+2 WS
Extra attack(s) power
Items:
+1 Armor, anyone in base loses STR bonuses from weapons and gains Strike Last
+3 Attack Sword (I don't have my book in front of me, if too many points then the +2 Weapon)
Shield
Mounted (Flying Mount)
Attach to a unit of Vargeists...Vampire has a potential of 14 or 16 attacks , most units will need 5's to hit even if they make their fear test (unless WS5 or higher).
Alternativly, you could make this a Strigoui Ghoul King, with everything above except the armour and Shield. Exchanging for a 2+ ward save from flaming. Either Mounted on a Terrorgeist or with the flying power.
Thoughts?