I'm finally at the end of my 17 fights, have the inspiration of hilda ready, but I need an extra level before the spider fight.
So I upgrade my items.
Each fight won, I look at the Call Colossus result. Surprisingly, since I am in the spider cave, it is always Black dragon. It sucks for the spider combat... So I go out and try the Call Colossus again. Surprise ! It changes to Ogres !!!!
So, good to know : the randomization of call colossus spell changed from KB TL and AP : now, it is the place you are in the game that gives the troop !!!!
I'm now navigating through the map, looking for a Cyclop
And then, the spider is mine : NO LOSS POWER !