What does a gift from Ormagöden do?

In between missions you can find serpent statues who are covered in some leather. For each ten statues you free from their wrapping you get a gift from Ormagöden.

I freed my first ten statues and didn't get any hint as to what I got. What is this gift from Ormagöden? Is it always the same? Or are there twelve different gifts?

Solution 1:

For each bound serpent you free, you get the obvious 5 fire tributes that can be spent at Motor Forges.

For each 10 bound serpents you free, you get a small boost to some aspect of combat.

10    Increase your health a small amount. (10% above normal)
20    Increase your health regeneration a small amount. (10% above normal)
30    A small healing bonus for nearby troops. (5% bonus)
40    Increase your flight speed a small amount. (10% above normal)
50    Increase your health a large amount. (20% above normal)
60    Increase your health regeneration a large amount. (20% above normal)
70    A large healing bonus for nearby troops. (10% above normal)
80    Increase your flight speed a large amount. (20% above normal)
90    Increase your health a brütal amount. (30% above normal)
100   A brütal healing bonus for nearby troops. (15% above normal)
110   Increase your health regeneration a brütal amount. (30% above normal)
120   Increase your flight speed a brütal amount. (30% above normal)

It should be noted that these are the cumulative effects to the given aspect and are not additive for the boost affected - the 10% health boost is replaced by the 20% and then 30% and are not added on top of each other. In other words, each health boost, regen boost, and flight boost adds 10% more to the bonus over default behaviour, and each troop regen boost adds 5%.

You get all these same 12 gifts in the same order every time you play through the game.

They also count towards game progress for achievements such as the 100% completion achievement, Metal God.