Ok, so this is a long-shot but you could make it work if the dice gods favour you.
First off, you'll need to ditch the Black Legion and dedicate yourself to Khorne. You want an aggressive alpha-strike? You have to go all in, screaming KILL! MAIM! BURN! like you really mean it.
The World Eaters Butcherhorde decurion grants all deployed non-vehicle models a free 2D6" move at the start of the game. Have your mandatory lord on something fast-moving, Juggernaut, Jump-Pack, whatever. Take that 2D6" free move, plus his 12" regular move, plus his charge range. If you're lucky, he can make a turn 1 assault and on turn 2 when you start rolling reserves, you can Deep Strike - scatter free - something like a Raptor Talon, Terminator Anhiallation Force, Cult of Destruction, etc.