Unit Composition: 1 Sororitas Avenger Strike Fighter
Unit Type: Vehicle (Flyer)

Wargear: Avenger Bolt Cannon; two four Exorcist Missile Pods; armoured cockpit

Special Rules: Strafing Run, Deep Strike, Supersonic

Options:
None.

Weapons:
Avenger Bolt Cannon: 36" S:6 AP:3 Heavy 7

For each unit that has Exorcist Missile Pods, you must choose one of the following profiles -- all a unit's pods must have the same profile:
Fiery Hammer: 48" S:8 AP:1 Heavy 1, One Shot , Gets Hot
Flaming Halo: 36" S:6 AP:4 Small Blast, Ignores Cover, Heavy 1, One Shot , Gets Hot
Falling Angel: 60" S:7 AP:3 Skyfire, Interceptor, Heavy 1, One Shot, Gets Hot
Infinite Mercy: 72" S:6 AP:3 Heavy 1, One Shot, Gets Hot

Largely forgotten for the first millennia of the Imperium's history, the Avenger Strike Fighter STC was rediscovered in time to fight in the Age of Apostasy, when the forces of Saint Sebastian Thor, who found its multi-barreled bolt cannon ideally suited to shredding the power-armoured elite of High Lord Vandire's Frateris Templar and the then-Brides of the Emperor.
While relatively rare in the Imperial Navy, which generally disdains single-mission ground attack craft, the Avenger is the favored fighter of the Adepta Sororitas. In addition to requesting close support from Navy Avengers whenever available, the better-resourced Orders Militant field their own model, which they insist is the original, faithfully following the STC print-outs used by Sebastian Thor.
Instead of the dual lascannons and defensive gun turret of the Navy version, the Sororitas Avenger has a pair of four Exorcist missiles and additional armour plating: for all their emphasis on martyrdom, the Sororitas consider personnel less expendable than the Navy does and cannot spare its highly trained personnel to operate a rarely-used secondary weapon. While the Sororitas Avenger lacks the spare weight capacity to carry under-wing ordnance, the combination of the Exorcist missiles' tank-killing power and the Avenger Bolt Cannon's capability to shred light armor and heavy infantry makes for formidable firepower, while the extra armour -- and, the Sisters say, the protection of the God-Emperor -- improves the aircraft's survivability.

+1 BS on something with this insane amount of firepower: +20
Shield of Faith on a flier, which can't easily get cover saves: +15 points
+1 left armour, +1 right armour: +20 points
Total additions: +55 pts

Delete defensive heavy stubber: zero points, c'mon, nobody uses that

Replace two lascannon (40 points) with two Exorcist Missiles @15 points each: -10 +20

150 + 55 -10 = 150 + 45 = 195
150 + 55 + 20 = 150 +75 = 225