Chris, you're posting in the wrong thread, this one is for models rather than formations... and your Greater Incursion sounds very similar to the existing Warp Rift Datasheet.
Anyway...
Holy Fortress of the Ecclesiarchy
SoB Capital Imperialis.
Superheavy Tank
Structure Points: 9
Void Shields: 6
BS4 Front 14 Side 14 Rear 12
Weapons:
Turret-mounted Inferno Gun (as per Warhound)
Four sponson-mounted twin-linked Heavy Bolters
Four sponson-mounted Heavy Flamers
Transport: 60 infantry plus up to two Rhino-chassis tanks such as Immolators.
Access Points: assault ramp at the front (infantry only), assault ramp at rear.
Special Rules
Holy Shrine: All Sisters of Battle units within 24" have Ld10 and may re-roll failed Morale checks.
Unstoppable: May drive through buildings and area terrain, automatically destroying them but taking a glancing hit on a 4+.
Points: 1500?