Talionis
From Warhammer 40k - Lexicanum
Corax wielding Talionis[2]
Talionis was a weapon wielded by Corvus Corax, Primarch of the Raven Guard.[1]
This ornate twin-barbed bullwhip was a rare example of Kiavahr technology that was carried by Corax. It served not only as a weapon, but also as a reminder of the tyrannical powers that once held him captive.[1][2] A powerful tool in the Primarch's hand, Corax was able to slice Space Marines apart in Terminator Armour with a single lash of the weapon.[2]