The title can be confusing, I know...
This is a project I made for a friend of mine. I all started like this:
GW's 'Casket of Souls'. But we weren't aiming for this. Does this remind you of anything?
But... Look who's attending here!
However, the poor sorcerer got confused spelling so many 'h', 'tz' and other strange sounds; it was just a matter of time that he didn't invoke Tzeentch but... someone else!
Well, my pal's original idea was having Primarch Magnus raising over the altar, escorted by six Astartes Fellowships, two robot Maniples and a cloud of flaming Tutelaries, all surrounded by an ectoplasmatic projection of Tzeentch itself. But the lazy artist alleged some excuses about budget and space, and simply put a winged octopus
There is much more story (and many more pics!) here:
http://oldschoolworkshop.blogspot.com.es/2014/01/raiders-of-lost-ark.html