Considering that Lead the Stampede isn't THAT useful, I considering replacing it with four more Shadowborn Apostle . Thoughts, fellow helpers? :D

either go all in with the Apostles and add more demons or remove them all entirely, you could run something like Immortal Servitude to get them all back and sac them all again but its pretty niche.

But Rune-Scarred Demon is the only useful one (except for that 7/7 flyer with lifelink, that I can't rememebr the name of), which I won't have the time to cast. However, Immortal Servitude is incredible.

Griselbrand, http://gatherer.wizards.com/Pages/Search/Default.aspx?page=1&type=+%5Bdemon%5D%7C%7Csubtype=+%5Bdemon%5D

I looked. Nothing that would help cast Worldspine Wurm . The only reason I consider Griselbrand useful, is because of lifelink, so that I can regain any life I have lost, but I won't have time.

The best part of griselbrand is Draw 7, Obviously :P Lifelink isn't a great mechanic..

Also you don't run Shadowborn apostle to cast Worldspine wurm, you run Shadowborn apostle for the ability to get demons, so add some demons that win the game!

I run Shadowborn Apostle to cast Rune-Scarred Demon , to obtain Garruk, Caller of Beasts , to cast a few Worldspine Wurm , to win the game. I would never draw enough Shadowborn Apostle to cast a few good demons during one game.