Home/Events/Council of NikaeaEvent · M30–M31Council of NikaeaCouncil of NikaeaSee where Council of Nikaea occurred on the galactic map during the Horus Heresy.Open in universeLocationsNikaeaNikaea SystemInvolved charactersAntaka CyvaanDio PromusLeman RussMagnus the RedMahavastu KallimakusMalcador the SigilliteMortarionThe Emperor of Mankind