Last round of College league!

So all the lists are submitted and now can not change! the game is in a week and a half!
So right here is his list!
He is playing Sisters btw!
Also the mission is pitched Battle, Kill points!

Canoness
Bless Weapon
Inferno Pistol
Cloak of St.Aspire
Litanies of Faith
Rosarius

Canoness
Eviscerator
Inferno Pistol
Frag Grenade
Cload of St.Aspire

Priest
Eviscerator
Bolt Pistol
Power Armour

18 Sisters
Veteran
Frag Grenades
Eviscertaor
Bolters
2 Melta Guns

10 Sisters
Veteran
Frag Grenades
Bolters
2 Melta guns

10 Retributors
Veteran
Frag Grenade
Bolters
4 Heavy Bolters

Exorist

Exorist

1200-Total

So here is his list! He plays aggressivly with his sisters normally leaving exorists at the back of table with the retributors and then try and move everything forward!

And here is my list!
As you can see why my list! I was worred about there being 3 Exorists!


Battle Leader
Wolf Claw
Storm Shield
Melta Bombs

10 Grey Hunters
2 Plasma Guns

10 Grey Hunters
2 Plasma Guns

9 Blood Claws
1 Flamer
1 Power Weapon

5 Scouts
3 Meltabombs

Land Raider

6 Long Fangs
5 Missile Launchers

Predator
TL Lascannon
Sponson Lascannon

1250-Total

So my tactic is to use my tanks and long fangs to blow up or destroy the exorists weapons!
I will sit in a gunline, with the blood claws and battle leader in land raider, ready to close combat anything that comes near! My scouts are going to also go exorist hunting but if that fails/none exorists left they will try and get into close combat with the heavy bolter squad!

So what do you lot think?