Unyielding Anvil or Spear of Lights?

Hello brothers!

When fielding a Grand Master, we are faced with four choices when deciding which Grand Strategy power to use. Personally, I've been torn between Unyielding Anvil and Spear of Lights.

My current list consists of the following:

HQ

Grand Master

Coteaz

TROOPS

3X - (5) Terminators (2 Hammers, 3 Halberds, 1 Psycannon)
        *Organized as either 10-man/5-man or (3) 5-man*

FAST ATTACK

Storm Raven

HEAVY SUPPORT

Dreadnought (2-TLAC, Psybolt Ammo)

Dreadknight (Heavy Incinerator, Great Sword)

I have up to three troop choices to hold/contest objectives. I was considering Spear of Lights as a means of outflanking with the Dreadknight since he lacks a Personal Teleporter. (Which I wish I had the points for). In addition, depending on my Grand Strategy roll, I could nominate the Storm Raven (5-Terminators) and an additional squad to scouts.

Would this strategy prove useful over and against simply deepstriking onto the battlefield?

its always a matter of the mission. with your 3 troop selections you are fine in some and not so good on others.

on crusade missions you are fine with spear of light if there are no more than 3 objectives.

purge the alien is of course always spear of light the one you want to get instead of unyielding anvil.

on big guns never tire you got 5 scoring units. unyielding anvil isnt that important there.

the scouring can be tricky. you got 4 scoring units but there are always 6 objectives... unyielding anvil might be a good choice there.

the emperors will... well 2 objectives... all you actually have to do is deny the enemys objective and secure yours. so i think you should be fine with your troops.

the relic is also a mission where unyielding anvil is not that important but can certainly become nice with a dreadknight securing it and holding it with his high T, armour save and invul.

Thanks Brother Souba for the breakdown per scenario!