Ahriman

M6 WS2+ BS2+ S4 T4 W5 A4 Ld9 Sv3+
Death to the False Emperor - 6 on hit generate
extra attack against Imperium units.
Sorcerer of Tzeentch - Add 1 to any Psychic test
or Deny the Witch test.
Sigil of Corruption - 4+ Invulnerable Save.
Lord of the Thousand Sons - Re-roll hit rolls of 1
for friendly TS units within 6".