One was lost from my guess it was into a web portal

All primarchs participated in destroying of two legions by saying YES on the voting. Just remember events of "the first heretic" by ADB.

Praise be unto Tzeentch brother may we all be pawns in his magnificant plans!

Not all the Primarchs were found when the 2nd and 11th legion were put down. Remember that the 2nd and 11th gone before the crusade even started before the onset of the Horus Heresy in the early 31st Millennium

All is Dust

Let us do to those dogs of the emperor as they did to our home planet..burn fenris to dust
for All is Dust

Ignore the fact that I have a space wolf picture...just tell thousand sons are a playable chapter

They are not.

sadly this is true....but we may have access to http://wh40k.lexicanum.com/wiki/Sons_of_the_Cyclops#.U1D2cKJ8TQU through black legion

Indeed, just like i will have to be content with the Bringers of Decay until we see Death Guard take the spotlight.